Hi

Having problem with this one

Let f(x,y) = 4e^2y - xe^y

a) Calculate f(4,0)

b) Calculate f(a, ln(b)). Simplify as much as possible (your answer should not contain e)

c) Calculate the first order partial derivatives f'x(x,y) and f'y(x,y). Simplify as much as possible

I dont know what to do when "e" shows up.

Thanks!!