Consider the function f(x, y)=(ex−x)sin(y). Suppose S is the surface z=f(x, y). (a) Find a vector which is perpendicular to the level curve of f through the point (2,3) in the direction in which f decreases most rapidly.

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

The correct answer is c