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48 lines
957 B
Markdown
48 lines
957 B
Markdown
# cmath
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The `cmath` module provides some basic mathematical functions for working with complex numbers. Floating point support required for this module.
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## Methods
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#### cmath.cos\(z\)
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Return the cosine of `z`.
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#### cmath.exp\(z\)
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Return the exponential of `z`.
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#### cmath.log\(z\)
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Return the natural logarithm of `z`. The branch cut is along the negative real axis.
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#### cmath.log10\(z\)
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Return the base-10 logarithm of `z`. The branch cut is along the negative real axis.
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#### cmath.phase\(z\)
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Returns the phase of the number `z`, in the range \(-pi, +pi\).
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#### cmath.polar\(z\)
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Returns, as a tuple, the polar form of `z`.
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#### cmath.rect\(r, phi\)
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Returns the complex number with modulus `r` and phase `phi`.
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#### cmath.sin\(z\)
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Return the sine of `z`.
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#### cmath.sqrt\(z\)
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Return the square-root of `z`.
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## Constants
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* `cmath.e`: Base of the natural logarithm
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* `cmath.pi`: The ratio of a circle’s circumference to its diameter
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