math
posted by carrie on .
what is the derivatice of 3x4/4x+2

I will assume you mean
(3x4)/(4x+2)
use the quotient rule ...
y = (3x4)/(4x+2)
dy/dx = ( (4x+2)(3)  (3x4)(4) )/(4x+2)^2
= (12x + 6  12x + 16)/(4x+2)^2
= 22/(4x+2)^2
or
= 11/(2(2x+1)^2)