sqrt¶

sqrt(x, out=None, **kwargs)¶

Return the non-negative square-root of an array, element-wise.

Parameters:

x : ndarray or scalar: The values whose square-roots are required.
out : ndarray, or None, optional: A location into which the result is stored. If provided, it must have a shape that the inputs broadcast to. If not provided or None, a freshly-allocated array is returned.

Returns:

y : ndarray or scalar: An array of the same shape as x, containing the positive square-root of each element in x. This is a scalar if x is a scalar.
Notes

Examples

>>> np.sqrt(np.array([1,4,9]))
array([1., 2., 3.])
>>> np.sqrt(np.array([4, -1, _np.inf]))
array([ 2., nan, inf])