1 / | | 2 | -------- dx | 2 | 1 + 9*x | / 0
Integral(2/(1 + 9*x^2), (x, 0, 1))
/ | | 2 | -------- dx | 2 | 1 + 9*x | /
/2\ |-| 2 \1/ -------- = ----------- 2 2 1 + 9*x (-3*x) + 1
/ | | 2 | -------- dx | 2 = | 1 + 9*x | /
/ | | 1 2* | ----------- dx | 2 | (-3*x) + 1 | /
/ | | 1 2* | ----------- dx | 2 | (-3*x) + 1 | /
v = -3*x
/ | | 1 2* | ------ dv = 2*atan(v) | 2 | 1 + v | /
/ | | 1 2*atan(3*x) 2* | ----------- dx = ----------- | 2 3 | (-3*x) + 1 | /
2*atan(3*x) C + ----------- 3
/ | | 2 2*atan(3*x) | -------- dx = C + ----------- | 2 3 | 1 + 9*x | /
2*atan(3) --------- 3
=
2*atan(3) --------- 3
2*atan(3)/3
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.