# Thread: y = e4x - 3 derive

1. ## y = e4x - 3 derive

im stuck on this problem y = e4x - 3
i know ' of ex
is ex

2. Originally Posted by realistic
i know ' of ex
is ex
Yes the derivative of $\displaystyle e^x$ is $\displaystyle e^x$. And what is the derivative of $\displaystyle ax-b$? (a,b are constants)

One suggestion. Don't write like that. Solving the problems without knowing the meaning of " ' " won't help you in future.

3. Originally Posted by realistic
im stuck on this problem y = e4x - 3
i know ' of ex
is ex
You know that the derivative of e^x is e^x. Do you know the chain rule? Do you know how to find the derivative of f(x)+ g(x) if you know the derivatives of f and g separately? Do you know the derivative of a constant? (Remember that the derivative is the "rate of change"- how fast does a constant change?)
Those are all things that are normally learned well before the derivative of the exponential.