Question 7 (1 point) a) Use the Lagrange multiplier method to find the stationary value(s) of zgiven by z= x2 - 2y+ 15, subject to X+ y= 0. The unique stationary point is given by f: b) The determinant of the bordered Hessian is '~*/ In the blank below, enter "min" or "max" (without the quotes), depending on whether the above stationary point is a constrained minimum or a constrained maximum. '~v