1. ## Help finding derivative

(4x+3)/(3x^2+4)

Thanks.

2. Originally Posted by beachbunny619
(4x+3)/(3x^2+4)

Thanks.
Use the quotient rule (f'g - g'f) / g^2, where f = 4x+3 and g = 3x^2+4.

3. Originally Posted by ecopetition
Use the quotient rule (f'g - g'f) / g^2, where f = 4x+3 and g = 3x^2+4.
huh?

4. If you don't know how to do that use the product rule, (4x+3)(3x^2+4)^-1 ?

5. Originally Posted by ecopetition
If you don't know how to do that use the product rule, (4x+3)(3x^2+4)^-1 ?
Heres what I got:
-2*(6*x^2+9x+8)/(3*x^2+4)^2

But thats not right?