Note: For credit, you must show your work. Calculators are NOT permitted. 1. (25 Points.) Say that the terrain represented by the position (x, y) on a map has elevation h(x, y) = xy-x2-y?. You're standing at position (1, 3), (a) In which direction is the terrain the steepest (uphill)? (b) Would moving in the direction (14, 3) be going uphill or downhill