bundles / scipy 1.17.1 / scipy / stats / _finite_differences / _derivative

function

`scipy.stats._finite_differences:_derivative`

source: /scipy/stats/_finite_differences.py:69

Signature

def _derivative(func, x0, dx = 1.0, n = 1, args = (), order = 3)

Summary

Find the nth derivative of a function at a point.

Extended Summary

Given a function, use a central difference formula with spacing dx to compute the nth derivative at x0.

Parameters

func : function: Input function.
x0 : float: The point at which the nth derivative is found.
dx : float, optional: Spacing.
n : int, optional: Order of the derivative. Default is 1.
args : tuple, optional: Arguments
order : int, optional: Number of points to use, must be odd.

Notes

Decreasing the step size too small can result in round-off error.

Examples

def f(x):
    return x**3 + x**2

✓

_derivative(f, 1.0, dx=1e-6)

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Aliases

scipy.stats._distn_infrastructure._derivative