help solve this problem

All questions in this assignment are based on the model QP given by min { f(x) = ca + ;x'Cx| Ax S b}. N (1) Let To be feasible for the QP, and suppose that the gradients (a;) of the constraint functions are listed as rows (@,) in the matrix Ao. Assume that Ao has full row rank. (a) Show that To is a quasi-stationary point for the QP if and only if has the solution so = 0. (b) Now assume that x1 is a quasi-stationary point for the QP and that A, is obtained from Ao by deleting row k where (vo) > 0, Show that gis > 0 where s, is obtained from the solution of