integral 4 x1x1 dxSolutionintegral 4 x1x1 dx integral 2 x1 x

Solution

integral 4/ (x+1)(x-1) dx

integral 2 (x+1- (x-1)/ (x+1)(x-1) dx

= 2 (1/(x-1) - 1/(x+1) dx

= 2 ln(x-1) - ln(x+1) +C

= 2 ln ( x-1/(x+1) +C