The Hessian matrix of the Rosenbrock function.
x : array_like
1-D array of points at which the Hessian matrix is to be computed.
rosen_hess : ndarray
The Hessian matrix of the Rosenbrock function at x.
See also
rosen, rosen_der, rosen_hess_prod
scipy.optimize.rosen_der
scipy.optimize.rosen_hess_prod