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  Real and imaginary parts over the complex plane Contour plot of the real part (red) and imaginary part (blue) of   over the  . Here  . By the Cauchy–Riemann equations the curves of constant real part and constant imaginary part are orthogonal. Curves of vanishing real part (red) and imaginary part (blue) of   over the  . Here  . Absolute value and argument over the complex plane Contour plot of the absolute value (violet) and argument (green) of   over the  . Here  .  Real and imaginary part over the complex plane around infinity Contour plot of the real part (red) and imaginary part (blue) of   over the  . Here  . The essential singularity at   results in a complicated structure of the contour lines. Curves of vanishing real part (red) and imaginary part (blue) of   over the  . Here  . Absolute value and argument over the complex plane around infinity Contour plot of the absolute value (violet) and argument (green) of   over the  . Here  . The essential singularity at   results in a complicated structure of the contour lines. 
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