Consider the function                 (a) Plot the surface and contour curves for this function for −4 ≤  ≤ 4 and −4 ≤  ≤ 4. (b) Use the SDM to find the (global) minimum point for this function. Make...

Consider the function

(a) Plot the surface and contour curves for this function for −4 ≤
 ≤ 4 and −4 ≤
 ≤ 4.

(b) Use the SDM to find the (global) minimum point for this function. Make sure to state what stopping condition you used, the initial point, and the number of iterations needed.

(c) Redo (b) but use the Polak-Ribi`ere method. Also, you must use the same starting point(s) as in part (b).