4 (x^2 + 1)^-1
4 * -1 * (x^2 + 1)^-2 * 2x
-8x / (x^2+1)^2
Find the anti derivative for 4/(x^2+1)
3 answers
Your question is of this type:
Integral of du / (a^2 + u^2) = (1/a) tan-1(u/a) +c
Integral of du / (a^2 + u^2) = (1/a) tan-1(u/a) +c
OOPS... missed the "anti" part
that is the derivative
that is the derivative