Corresponding to the dual function (14.17): (a) Find its gradient. (b) Find its Hessian. (c) Verify.

Corresponding to the dual function (14.17):
(a) Find its gradient. (b) Find its Hessian. (c) Verify that it has a local
maximum at λ∗, μ∗. Find
the Hessian expression of the dual function for a separable , for , 1 (this
may provide information to develop Newton’s method for solving the dual).