Thread: 1st & 2nd Order Partial Derivatives

Find the first and second order partial derivatives for the following function:

f(x,y) = 2x^3 - 6xy^2 +5y^4

Need to find:
fx
fy
fxx
fxy
fyx
fyy

I don't understand the concept of finding partial derivatives and my calculus text has (once again) proven itself to be worthless.

Thanks in advance...

When finding fx, variables other than x are treated as constants.

So

For take the derivative of treating non-x variables as constants.

Are fxx and fyy just 2nd derivatives of fx and fy, respectively?

Are fxy and fyx always the same? I don't understand the difference between those two.