How do I use the quotient rule on this function:
(4x − 2) / (x2 + 1) ?

Question

How do I use the quotient rule on this function: 
(4x − 2) / (x2 + 1) ?

anonymous · Answer

$$
	\frac{4x-2}{x^{2}+1}
$$

anonymous · Answer

$$f(x) = \frac{g(x)}{h(x)} => \frac{h'(x) * g(x) - g'(x)*h(x)}{[h(x)]^2} $$

anonymous · Answer

$$f(x) = \frac{Top Func.}{Bottom Func} => \frac{Deriv. of Bottom Func * Top func. - Deriv. of Top func. * Bottom Func}{[Bottom Func]^2}  $$

anonymous · Answer

so here: g(x) = 4x-2, h(x) = x^2 + 1

anonymous · Answer

OH, cool, I'll give it a shot:

g(x) = (4x-2), h(x) = x^2+1. g'(x) = 4, h'(x) = 2x

anonymous · Answer

so: $$\frac{2x * (4x-2) - 4*(x^2+1)}{[(x^2+1)]^2}  $$

anonymous · Answer

yes!

anonymous · Answer

you can try to simplify here too

anonymous · Answer

d/dx= ((2x)(4x-2)-(4)(x^2+1))/ (x^2+1)^2
=4x^2-4x-4/ (x^2+1)^2

anonymous · Answer

anonymous · Answer

4/(x^2+1)-(2*(4*x-1))*x/(x^2+1)^2