Let f(x,y) = x^2 - y^3
a) Find the gradient of f(x,y) at (3,2).
c) Find the maximum value of the directional derivative of f(x,y) at (3,2) and the direction in which it occurs.
Hello and thank you for posting your question to Brainmass!
The solution is ...
The two dimensional gradient operator is expressed clearly.