Hello,
I bought the app you for AppStore, I am a customer from Brazil. I could not solve second derivative questions, could you help me?
I would like to find the derivatives of a function in shapes: X, Y, XX, XY, YX, YY.
Example: F (X, Y) = e ^ (2-x) / Y ^ 2
F (x) = F (y) = F (xx) = F (xy) = F (yx) = F (yy) =
Can you explain me how to write these formulas in the application?
Thanks !!
