Partial Derivatives of e^(-ET) with Functions E and T: How to Solve"

[steve0606]

Homework Statement

Find all first and second partial derivatives of the following function:

z = e^(-ET) where E and T are functions of z.

I know how to do partial differentiation, but not when the variables are functions of z? I don't understand - is there some sort of implicit partial differentiation?

Homework Equations

The Attempt at a Solution

I have no idea at how to start!

 

[HallsofIvy]

Homework Statement

Find all first and second partial derivatives of the following function:

With respect to what variables?

z = e^(-ET) where E and T are functions of z.

I know how to do partial differentiation, but not when the variables are functions of z? I don't understand - is there some sort of implicit partial differentiation?

Homework Equations

The Attempt at a Solution

I have no idea at how to start!