# y = e4x - 3 derive

• Mar 31st 2011, 02:13 AM
realistic
y = e4x - 3 derive
im stuck on this problem y = e4x - 3
i know ' of ex
is ex
• Mar 31st 2011, 03:56 AM
Sambit
Quote:

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.
• Mar 31st 2011, 04:34 AM
HallsofIvy
Quote:

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.