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