scipy.misc.derivative¶
- scipy.misc.derivative(func, x0, dx=1.0, n=1, args=(), order=3)[source]¶
Find the nth derivative of a function at a point.
Given a function, use a central difference formula with spacing dx to compute the nth derivative at x0.
- Parameters
- funcfunction
Input function.
- x0float
The point at which the nth derivative is found.
- dxfloat, optional
Spacing.
- nint, optional
Order of the derivative. Default is 1.
- argstuple, optional
Arguments
- orderint, optional
Number of points to use, must be odd.
Notes
Decreasing the step size too small can result in round-off error.
Examples
>>> from scipy.misc import derivative >>> def f(x): ... return x**3 + x**2 >>> derivative(f, 1.0, dx=1e-6) 4.9999999999217337