Use Maple software to solve please

Also please provide GRAPHS

The Relative Extrema and Saddle Points on a Surface-Project 8 Objective: To extend the derivative techniques and Extreme Value Theorem for a function of a single variable to a function of two variables. To identify the extrema and saddle points on a surface by using the computer graphing utility. To verify the extrema and saddle points by applying the second-partial derivative test. Background: Let f have continuous first and second partial derivatives on an open region containing a point P(a, b) for which fr(a, b) = 0 and fy (a, b) = 0. To test for relative extrema of f, we define the quantity: d = fxx(a, b)fyy(a, b) - [fry(a, b)]? 1. If d > 0 and fer(a, b) > 0, then f(a, b) is a relative minimum. 2. If d > 0 and fer(a, b)