(16x)/(x^2+4) for -5 (less than OR equal to) x (less than OR equal to) 5
Set the derivative of the equation equal to 0, solve for x to find the critical points, then plug and check for validity.
The Attempt at a Solution
I used product rule for (16x)*(x^2+4)^-1
I got the derivative as
(-32x^2)/((x^2+4)^2) + (16/(x^2+4))
which I then set equal to 0.
I then made an attempt to solve for x, but got x^2(48x^2+256)=-256, which I'm very unsure of, and am also not sure how to solve.
Help is appreciated.