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   http://functions.wolfram.com/01.07.21.2393.01
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    Integrate[(a Sin[e z]^2 + b Cos[e z]^2)^(3/2), z] == 
 ((-a + b) (a + b + (-a + b) Cos[2 e z]) Sin[2 e z] + 
   (4 Sqrt[2] (1 + Cos[e z]) Sqrt[(a + b + (-a + b) Cos[2 e z])/
       (1 + Cos[e z])^2] 
     (-((I (a^2 + a b + b^2) EllipticF[
          I ArcSinh[Sqrt[b/(2 a + 2 Sqrt[a] Sqrt[a - b] - b)] Tan[(e z)/2]], 
          (-2 a - 2 Sqrt[a] Sqrt[a - b] + b)/(-2 a + 2 Sqrt[a] Sqrt[a - b] + 
            b)] Sqrt[1 + (b Tan[(e z)/2]^2)/(2 a + 2 Sqrt[a] Sqrt[a - b] - 
             b)] Sqrt[1 - (b Tan[(e z)/2]^2)/(-2 a + 2 Sqrt[a] Sqrt[a - b] + 
             b)])/Sqrt[-((-2 a + 2 Sqrt[a] Sqrt[a - b] + b)/b)]) + 
      (1/(a - b)) ((-a^2 + b^2) 
        ((-I) b Sqrt[-((-2 a + 2 Sqrt[a] Sqrt[a - b] + b)/b)] 
          EllipticE[I ArcSinh[Sqrt[b/(2 a + 2 Sqrt[a] Sqrt[a - b] - b)] 
              Tan[(e z)/2]], (-2 a - 2 Sqrt[a] Sqrt[a - b] + b)/
            (-2 a + 2 Sqrt[a] Sqrt[a - b] + b)] 
          Sqrt[1 + (b Tan[(e z)/2]^2)/(2 a + 2 Sqrt[a] Sqrt[a - b] - b)] 
          Sqrt[1 - (b Tan[(e z)/2]^2)/(-2 a + 2 Sqrt[a] Sqrt[a - b] + b)] - 
         ((-(-2 a + 2 Sqrt[a] Sqrt[a - b] + b)) (-a - b + (a - b) Cos[2 e z]) 
            Sec[(e z)/2]^2 Tan[(e z)/2] - 2 I b 
            Sqrt[-((-2 a + 2 Sqrt[a] Sqrt[a - b] + b)/b)] 
            (-a + 2 Sqrt[a] Sqrt[a - b] + b) EllipticF[
             I ArcSinh[Sqrt[b/(2 a + 2 Sqrt[a] Sqrt[a - b] - b)] 
                Tan[(e z)/2]], (-2 a - 2 Sqrt[a] Sqrt[a - b] + b)/
              (-2 a + 2 Sqrt[a] Sqrt[a - b] + b)] 
            Sqrt[1 + (b Tan[(e z)/2]^2)/(2 a + 2 Sqrt[a] Sqrt[a - b] - b)] 
            Sqrt[1 - (b Tan[(e z)/2]^2)/(-2 a + 2 Sqrt[a] Sqrt[a - b] + b)])/
          (2 (-2 a + 2 Sqrt[a] Sqrt[a - b] + b))))))/
    Sqrt[4 a Tan[(e z)/2]^2 + b (-1 + Tan[(e z)/2]^2)^2])/
  (6 Sqrt[2] e Sqrt[a + b + (-a + b) Cos[2 e z]]) 
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</mo>  <mrow>  <mrow>  <mo> - </mo>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> - </mo>  <mi> b </mi>  <mo> + </mo>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> cos </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> tan </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> sec </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mi> b </mi>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mo> - </mo>  <mfrac>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mi> b </mi>  </mfrac>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> F </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> sinh </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mrow>  <msqrt>  <mfrac>  <mi> b </mi>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> - </mo>  <mi> b </mi>  </mrow>  </mfrac>  </msqrt>  <mo> ⁢ </mo>  <mrow>  <mi> tan </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ❘ </mo>  <mfrac>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mfrac>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> - </mo>  <mi> b </mi>  </mrow>  </mfrac>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mfrac>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  </mfrac>  </mrow>  </msqrt>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  <mo> / </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> - </mo>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mfrac>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> - </mo>  <mi> b </mi>  </mrow>  </mfrac>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mo> - </mo>  <mfrac>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mi> b </mi>  </mfrac>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <mi> b </mi>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mfrac>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  </mfrac>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <mrow>  <mi> E </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> sinh </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mrow>  <msqrt>  <mfrac>  <mi> b </mi>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> - </mo>  <mi> b </mi>  </mrow>  </mfrac>  </msqrt>  <mo> ⁢ </mo>  <mrow>  <mi> tan </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ❘ </mo>  <mfrac>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> - </mo>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <msup>  <mi> a </mi>  <mn> 2 </mn>  </msup>  <mo> + </mo>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <msup>  <mi> b </mi>  <mn> 2 </mn>  </msup>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> F </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mrow>  <mi> ⅈ </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> sinh </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mrow>  <msqrt>  <mfrac>  <mi> b </mi>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> - </mo>  <mi> b </mi>  </mrow>  </mfrac>  </msqrt>  <mo> ⁢ </mo>  <mrow>  <mi> tan </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ❘ </mo>  <mfrac>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> - </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  </mfrac>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mfrac>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> - </mo>  <mi> b </mi>  </mrow>  </mfrac>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mfrac>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  </mfrac>  </mrow>  </msqrt>  </mrow>  <mo> ) </mo>  </mrow>  <mo> / </mo>  <mrow>  <mo> ( </mo>  <msqrt>  <mrow>  <mo> - </mo>  <mfrac>  <mrow>  <mrow>  <mrow>  <mo> - </mo>  <mn> 2 </mn>  </mrow>  <mo> ⁢ </mo>  <mi> a </mi>  </mrow>  <mo> + </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> - </mo>  <mi> b </mi>  </mrow>  </msqrt>  <mo> ⁢ </mo>  <msqrt>  <mi> a </mi>  </msqrt>  </mrow>  <mo> + </mo>  <mi> b </mi>  </mrow>  <mi> b </mi>  </mfrac>  </mrow>  </msqrt>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  <mo> / </mo>  <mrow>  <mo> ( </mo>  <msqrt>  <mrow>  <mrow>  <mn> 4 </mn>  <mo> ⁢ </mo>  <mi> a </mi>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  <mo> + </mo>  <mrow>  <mi> b </mi>  <mo> ⁢ </mo>  <msup>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <msup>  <mi> tan </mi>  <mn> 2 </mn>  </msup>  <mo> ( </mo>  <mfrac>  <mrow>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mn> 2 </mn>  </mfrac>  <mo> ) </mo>  </mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  <mo> ) </mo>  </mrow>  <mn> 2 </mn>  </msup>  </mrow>  </mrow>  </msqrt>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  <mo> / </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mn> 6 </mn>  <mo> ⁢ </mo>  <msqrt>  <mn> 2 </mn>  </msqrt>  <mo> ⁢ </mo>  <mi> e </mi>  <mo> ⁢ </mo>  <msqrt>  <mrow>  <mi> a </mi>  <mo> + </mo>  <mi> b </mi>  <mo> + </mo>  <mrow>  <mrow>  <mo> ( </mo>  <mrow>  <mi> b </mi>  <mo> - </mo>  <mi> a </mi>  </mrow>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mi> cos </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> e </mi>  <mo> ⁢ </mo>  <mi> z </mi>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </msqrt>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <eq />  <apply>  <int />  <bvar>  <ci> z </ci>  </bvar>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <ci> a </ci>  <apply>  <power />  <apply>  <sin />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  </apply>  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <cos />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  </apply>  </apply>  <cn type='rational'> 3 <sep /> 2 </cn>  </apply>  </apply>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <apply>  <plus />  <ci> b </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  </apply>  <apply>  <plus />  <ci> a </ci>  <ci> b </ci>  <apply>  <times />  <apply>  <plus />  <ci> b </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  </apply>  <apply>  <cos />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  <apply>  <sin />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  <apply>  <times />  <apply>  <times />  <cn type='integer'> 4 </cn>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <plus />  <apply>  <cos />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <apply>  <power />  <apply>  <times />  <apply>  <plus />  <ci> a </ci>  <ci> b </ci>  <apply>  <times />  <apply>  <plus />  <ci> b </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  </apply>  <apply>  <cos />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  <apply>  <power />  <apply>  <power />  <apply>  <plus />  <apply>  <cos />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <plus />  <apply>  <times />  <apply>  <times />  <cn type='integer'> 1 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <times />  <apply>  <plus />  <apply>  <power />  <ci> b </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <power />  <ci> a </ci>  <cn type='integer'> 2 </cn>  </apply>  </apply>  </apply>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  </apply>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  <apply>  <times />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <apply>  <cos />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> e </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <apply>  <power />  <apply>  <sec />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 2 </cn>  <imaginaryi />  <ci> b </ci>  <apply>  <power />  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <apply>  <power />  <ci> b </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <apply>  <ci> EllipticF </ci>  <apply>  <times />  <imaginaryi />  <apply>  <arcsinh />  <apply>  <times />  <apply>  <power />  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  </apply>  <ci> b </ci>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <cn type='integer'> 1 </cn>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  </apply>  </apply>  <apply>  <power />  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <imaginaryi />  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <apply>  <power />  <ci> b </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <ci> b </ci>  <apply>  <power />  <apply>  <plus />  <cn type='integer'> 1 </cn>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <ci> EllipticE </ci>  <apply>  <times />  <imaginaryi />  <apply>  <arcsinh />  <apply>  <times />  <apply>  <power />  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  <apply>  <times />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  </apply>  <ci> b </ci>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> -2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <ci> b </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <times />  <apply>  <times />  <imaginaryi />  <apply>  <plus />  <apply>  <power />  <ci> a </ci>  <cn type='integer'> 2 </cn>  </apply>  <apply>  <times />  <ci> b </ci>  <ci> a </ci>  </apply>  <apply>  <power />  <ci> b </ci>  <cn type='integer'> 2 </cn>  </apply>  </apply>  <apply>  <ci> EllipticF </ci>  <apply>  <times />  <imaginaryi />  <apply>  <arcsinh />  <apply>  <times />  <apply>  <power />  <apply>  <times />  <ci> b </ci>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> a </ci>  </apply>  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <power />  <apply>  <plus />  <ci> a </ci>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <power />  <ci> a </ci>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> b </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <cn type='rational'> 1 <sep /> 2 </cn>  </apply>  <apply>  <tan />  <apply>  <times />  <ci> e </ci>  <ci> z </ci>  <apply>  <power />  <cn type='integer'> 2 </cn>  <cn type='integer'> -1 </cn>  </apply>  </apply>  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