# Math Help - Find inflection point(s) of the function

1. ## Find inflection point(s) of the function

f(x)= x/(5x^2+5)

I found f''(x) which is required to solve for x, but I still get the answer wrong on my online hw. what i got for:

f''(x)=-10x/(5x^2+5)^2

2. Originally Posted by Asuhuman18
f(x)= x/(5x^2+5)

I found f''(x) which is required to solve for x, but I still get the answer wrong on my online hw. what i got for:

f''(x)=-10x/(5x^2+5)^2
Try again on the derivative. The second derivative should be:

$f''(x)=\frac{2x(x^2-3)}{5(x^2+1)^3}$