$f(z)=e^z$

complex_plot(exp(x), (-4, 4), (-3, 3), aspect_ratio=1)

$f(z)=\log(z)$

complex_plot(log(x), (-4, 4), (-3, 3), aspect_ratio=1)

$f(z)=\sin(z)$

complex_plot(sin(x), (-4, 4), (-3, 3), aspect_ratio=1)

$f(z)=\cos(z)$

complex_plot(cos(x), (-4, 4), (-3, 3), aspect_ratio=1)

$f(z)=\tan(z)$

complex_plot(tan(x), (-4, 4), (-3, 3), aspect_ratio=1)

Riemann Zeta Function $\,\,\,\zeta(z)$

complex_plot(zeta(x), (-40, 40), (-30, 30), aspect_ratio=1)