1 / | | -x + 4 | ------------ dx | 2 | x - 2*x + 4 | / 0
Integral((-x + 4)/(x^2 - 2*x + 4), (x, 0, 1))
/ | | -x + 4 | ------------ dx | 2 | x - 2*x + 4 | /
/ 2*x - 2 \ |------------| /3\ | 2 | |-| -x + 4 \x - 2*x + 4/ \3/ ------------ = - -------------- + ------------------------ 2 2 2 x - 2*x + 4 / ___ ___\ |-\/ 3 \/ 3 | |-------*x + -----| + 1 \ 3 3 /
/ | | -x + 4 | ------------ dx | 2 = | x - 2*x + 4 | /
/ | | 2*x - 2 | ------------ dx | 2 | x - 2*x + 4 / | | / | 1 - ------------------ + | ------------------------ dx 2 | 2 | / ___ ___\ | |-\/ 3 \/ 3 | | |-------*x + -----| + 1 | \ 3 3 / | /
/ | | 2*x - 2 - | ------------ dx | 2 | x - 2*x + 4 | / -------------------- 2
2 u = x - 2*x
/ | | 1 - | ----- du | 4 + u | / -log(4 + u) ------------- = ------------ 2 2
/ | | 2*x - 2 - | ------------ dx | 2 | x - 2*x + 4 | / 2 \ / -log\4 + x - 2*x/ -------------------- = ------------------- 2 2
/ | | 1 | ------------------------ dx | 2 | / ___ ___\ | |-\/ 3 \/ 3 | | |-------*x + -----| + 1 | \ 3 3 / | /
___ ___ \/ 3 x*\/ 3 v = ----- - ------- 3 3
/ | | 1 | ------ dv = atan(v) | 2 | 1 + v | /
/ | / ___ ___\ | 1 ___ | \/ 3 x*\/ 3 | | ------------------------ dx = \/ 3 *atan|- ----- + -------| | 2 \ 3 3 / | / ___ ___\ | |-\/ 3 \/ 3 | | |-------*x + -----| + 1 | \ 3 3 / | /
/ 2 \ / ___ ___\ log\4 + x - 2*x/ ___ | \/ 3 x*\/ 3 | C - ----------------- + \/ 3 *atan|- ----- + -------| 2 \ 3 3 /
/ | / 2 \ / ___ \ | -x + 4 log\4 + x - 2*x/ ___ |\/ 3 *(1 - x)| | ------------ dx = C - ----------------- - \/ 3 *atan|-------------| | 2 2 \ 3 / | x - 2*x + 4 | /
___ log(4) log(3) pi*\/ 3 ------ - ------ + -------- 2 2 6
=
___ log(4) log(3) pi*\/ 3 ------ - ------ + -------- 2 2 6
log(4)/2 - log(3)/2 + pi*sqrt(3)/6
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.