# 2. i. Carefully, graph the function f(x, y)=-3x-3y+2 on the first octant of a properly labeled coordinate system. ii. Use a ruler to generate a contour map for the function f(x, y) = Vx – y , using z=0, 1, and 2 . iii. Given f(x,y)=- 3-2x’y log, (2x" 4xy3 -2x? y find f,(x, y) . (Do not simplify.) 3-2x’ y 10g, ( 2×3) iv. Give a point (x, y) where the function f(x, y )=- cannot be evaluated, and state the reason. 4xy3 – 2x’ y

2. i. Carefully, graph the function f(x, y)=-3x-3y+2 on the first octant of a properly labeled coordinate system.

ii. Use a ruler to generate a contour map for the function f(x, y) = Vx – y , using z=0, 1, and 2 .

iii. Given f(x,y)=-

3-2x’y log, (2x"

4xy3 -2x? y

find f,(x, y) . (Do not simplify.)

3-2x’ y 10g, ( 2×3)

iv. Give a point (x, y) where the function f(x, y )=-

cannot be evaluated, and state the reason.

4xy3 – 2x’ y