cmath
python:cmath.
The cmath module provides some basic mathematical functions for working with complex numbers.
Availability: not available on WiPy and ESP8266. Floating point support required for this module.
cos(z)
Return the cosine of z.
exp(z)
Return the exponential of z.
log(z)
Return the natural logarithm of z. The branch cut is along the negative real axis.
log10(z)
Return the base-10 logarithm of z. The branch cut is along the negative real axis.
phase(z)
Returns the phase of the number z, in the range (-pi, +pi].
polar(z)
Returns, as a tuple, the polar form of z.
rect(r, phi)
Returns the complex number with modulus r and phase phi.
sin(z)
Return the sine of z.
sqrt(z)
Return the square-root of z.
e
base of the natural logarithm
pi
the ratio of a circle's circumference to its diameter