Python cmath.log() Method
Example
Find the logarithm of a complex value:
#Import cmath Library
import cmath
#print log value of some given
parameters
print (cmath.log(1+ 1j))
print (cmath.log(1, 2.5))
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Definition and Usage
The cmath.log() method returns the logarithm
of a complex value.
With a single argument, this method returns the natural logarithm of that argument with base e.
With two arguments, this method returns the logarithm of the first argument (x) with the base of the second argument (base).
Syntax
cmath.log(x, base)
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. Specifies the value to calculate the logarithm for. If the value is 0 or a negative number, it returns a ValueError. If the value is not a number, it returns a TypeError |
| base | Optional. The logarithmic base to use. Default is 'e' |
Technical Details
| Return Value: | A complex value, representing the natural logarithm of a number, or the logarithm of number to base |
|---|---|
| Python Version: | Changed in version 2.4 |
| Python Changelog: | The base parameter was added |
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