sqrt(x, out=None, **kwargs)

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

  • 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.


y – 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.

Return type

ndarray or scalar


This function only supports input type of float.


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