Homework Help: math

Posted by elle on Thursday, January 25, 2007 at 6:49pm.

I need help differentiating this question:
3e^-4x
that's three e to the power of negative 4x.

when you differentiate, you get:

-12e^-4x

thanks, but how come it's not -12e^-4x-1, or do i just not minus a one when the power is a co-efficient?

Remember, the differential of e^x is also e^x. So, the final answer is e^xdx. That is, you just differentiate what's in the exponent. In your case, the differential of what's in the exponent is -4, so the final answer is just -4 x the original, or -4 x (3e^-4x).

No one has answered this question yet.

Answer this Question

Related Questions

bobpursley,math - about this problem , I figured it out and i did get the answer...
Math - For Reiny:What step did I do wrong.(Help) (x-4x^3)^2 =(x-4x^3)(x-4x^3)=(x...
Simplifying Rational Expressions - Can someone PLEASE solve these for me 1.4x-12...
math - differentiate y=-4x^2cos x. i need to know the calculation work. (ans: 4x...
math,bobpursly, - 4x-2x^2+4x^3 from 4x^3+x-3x^2 4x^3+x-3x^2 -( 4x-2x^2+4x^3) ...
math/algebra - can someone check me and see if this is correct. ã(...
Math - Write the slope-intercept form of an equation of the line that passes ...
Pre-Calculus - How do you factor this completly 7x*(4x-5)^3+(4x-5)^4 I am ...
Simplifying Rational Expressions - Can someone slove these for me 1.(4x-12)/4x 2...
algebra - thank everyone that site helped but now i just have to practice. for ...

For Further Reading

First Name:
School Subject:
Answer: