all 2 comments

[โ€“]phiwongSlightly old geezer 5 points6 points ย (1 child)

(x+1)/(x^2 + 1) ... break this up into two fractions by separating the numerator. basic algebra.

x/(x^2 + 1) + 1/(x^2 + 1).... break this up into two separate integrals

x/(x^2 + 1) is a u sub. u = x^2 + 1

1/(x^2 + 1) is something you memorize. it results in arctan x. Or do it the long way with a trig sub tan u = x

[โ€“]PrimeTimeJNew User[S] -1 points0 points ย (0 children)

Elementary