2*x/(1-x^2)
1 / | | 2*x | ------ dx | 2 | 1 - x | / 0
Integral(2*x/(1 - x^2), (x, 0, 1))
/ | | 2*x | 1*------ dx | 2 | 1 - x | /
2*x -1*2*x + 0 ------ = - -------------- 2 2 1 - x - x + 0*x + 1
/ | | 2*x | 1*------ dx | 2 = | 1 - x | /
/ | | -1*2*x + 0 - | -------------- dx | 2 | - x + 0*x + 1 | /
/ | | -1*2*x + 0 - | -------------- dx | 2 | - x + 0*x + 1 | /
2 u = -x
/ | | 1 - | ----- du = -log(1 + u) | 1 + u | /
/ | | -1*2*x + 0 / 2\ - | -------------- dx = -log\-1 + x / | 2 | - x + 0*x + 1 | /
/ 2\ C - log\-1 + x /
/ | | 2*x / 2\ | ------ dx = C - log\1 - x / | 2 | 1 - x | /
Use the examples entering the upper and lower limits of integration.