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http://functions.wolfram.com/01.20.21.0683.01
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Integrate[Cosh[c z]/(a + b Sin[d z]^2), z] == (1/(2 Sqrt[a] b Sqrt[a + b]))
((1/(c + 2 I d)) (((2 a + b + 2 Sqrt[a] Sqrt[a + b])
Hypergeometric2F1[1 - (I c)/(2 d), 1, 2 - (I c)/(2 d),
b/(E^(2 I d z) (2 a + b - 2 Sqrt[a] Sqrt[a + b]))] +
(-2 a - b + 2 Sqrt[a] Sqrt[a + b]) Hypergeometric2F1[1 - (I c)/(2 d),
1, 2 - (I c)/(2 d), b/(E^(2 I d z) (2 a + b +
2 Sqrt[a] Sqrt[a + b]))])/E^((c + 2 I d) z)) -
(1/(c - 2 I d)) (E^((c - 2 I d) z) ((2 a + b + 2 Sqrt[a] Sqrt[a + b])
Hypergeometric2F1[1 + (I c)/(2 d), 1, 2 + (I c)/(2 d),
b/(E^(2 I d z) (2 a + b - 2 Sqrt[a] Sqrt[a + b]))] +
(-2 a - b + 2 Sqrt[a] Sqrt[a + b]) Hypergeometric2F1[1 + (I c)/(2 d),
1, 2 + (I c)/(2 d), b/(E^(2 I d z) (2 a + b +
2 Sqrt[a] Sqrt[a + b]))])))
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