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scipy.optimize.rosen_der

scipy.optimize.rosen_der(x)

The derivative (i.e. gradient) of the Rosenbrock function.

Parameters :

x : array_like

1-D array of points at which the derivative is to be computed.

Returns :

rosen_der : (N,) ndarray

The gradient of the Rosenbrock function at x.

See also

rosen, rosen_hess, rosen_hess_prod