Please solve ASAP under an hour promise to drop a like

od upvlog 3 Tmath 126 Page 3 of 4 Spring 2022 4. Use the contour and gradient map to answer the following questions about the function z = f (x, y). ( oh - ( )by + (ox . a. Determine the signs of the first order partial va- derivatives at point P. (4) b. Mark the direction(s) at point P in which the directional derivative is zero. (2) c. Identify any local extreme and saddle points in this map. Is the local extreme a maximum or a minimum? (2)