0 / | | 2*x + 3 | ------- dx | 2 | x + 1 | / -oo
Integral((2*x + 3)/(x^2 + 1), (x, -oo, 0))
/ | | 2*x + 3 | ------- dx | 2 | x + 1 | /
/3\ |-| 2*x + 3 2*x \1/ ------- = ------------ + --------- 2 2 2 x + 1 x + 0*x + 1 (-x) + 1
/ | | 2*x + 3 | ------- dx | 2 = | x + 1 | /
/ / | | | 1 | 2*x 3* | --------- dx + | ------------ dx | 2 | 2 | (-x) + 1 | x + 0*x + 1 | | / /
/ | | 2*x | ------------ dx | 2 | x + 0*x + 1 | /
2 u = x
/ | | 1 | ----- du = log(1 + u) | 1 + u | /
/ | | 2*x / 2\ | ------------ dx = log\1 + x / | 2 | x + 0*x + 1 | /
/ | | 1 3* | --------- dx | 2 | (-x) + 1 | /
v = -x
/ | | 1 3* | ------ dv = 3*atan(v) | 2 | 1 + v | /
/ | | 1 3* | --------- dx = 3*atan(x) | 2 | (-x) + 1 | /
/ 2\ C + 3*atan(x) + log\1 + x /
/ | | 2*x + 3 / 2\ | ------- dx = C + 3*atan(x) + log\1 + x / | 2 | x + 1 | /
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.