For each of the functions in Problems 1-3, draw the graph and the corresponding contour plot. 1.

Question:

For each of the functions in Problems 1-3, draw the graph and the corresponding contour plot.
1. ((x y) = sin(2x2 + y2; -2 ( x ( 2, -2 ( y ( 2
2. ((x, y) = sin(x2 + y2)/(x2 + y2), ((0, 0) = 1; -2 ( x 2, -2 ( y ( 2
3. ((x, y) = 2x - y2 (exp(-x2 - y2); -2 ( x ( 2, -2 ( y ( 2