Question

What is the derivative of `e^cosx+e^siny=1/4`?

Answer 1

What to you mean exactly? You can calculate the derivative of a function in the form `y=f(x)` (or, in your case, `z=f(x,y)`, but what do you mean with the derivative of something like `f(x,y)=c`? You only want to know which the derivative of `e^{\cos(x)}+e^{\sin(x)}` is? Please explain better and I'll be glad to help