1 / | | 4*x + 3 | ------------- dx | 2 | x + 8*x + 25 | / 0
Integral((4*x + 3)/(x^2 + 8*x + 25), (x, 0, 1))
/ | | 4*x + 3 | ------------- dx | 2 | x + 8*x + 25 | /
/-13 \ |----| 4*x + 3 2*x + 8 \ 9 / ------------- = 2*------------- + -------------- 2 2 2 x + 8*x + 25 x + 8*x + 25 / x 4\ |- - - -| + 1 \ 3 3/
/ | | 4*x + 3 | ------------- dx | 2 = | x + 8*x + 25 | /
/ | | 1 13* | -------------- dx | 2 | / x 4\ | |- - - -| + 1 / | \ 3 3/ | | | 2*x + 8 / 2* | ------------- dx - ----------------------- | 2 9 | x + 8*x + 25 | /
/ | | 2*x + 8 2* | ------------- dx | 2 | x + 8*x + 25 | /
2 u = x + 8*x
/ | | 1 2* | ------ du = 2*log(25 + u) | 25 + u | /
/ | | 2*x + 8 / 2 \ 2* | ------------- dx = 2*log\25 + x + 8*x/ | 2 | x + 8*x + 25 | /
/ | | 1 -13* | -------------- dx | 2 | / x 4\ | |- - - -| + 1 | \ 3 3/ | / ------------------------ 9
4 x v = - - - - 3 3
/ | | 1 -13* | ------ dv | 2 | 1 + v | / -13*atan(v) ---------------- = ----------- 9 9
/ | | 1 -13* | -------------- dx | 2 | / x 4\ | |- - - -| + 1 | \ 3 3/ /4 x\ | -13*atan|- + -| / \3 3/ ------------------------ = --------------- 9 3
/4 x\ 13*atan|- + -| / 2 \ \3 3/ C + 2*log\25 + x + 8*x/ - -------------- 3
/ /4 x\ | 13*atan|- + -| | 4*x + 3 / 2 \ \3 3/ | ------------- dx = C + 2*log\25 + x + 8*x/ - -------------- | 2 3 | x + 8*x + 25 | /
13*atan(5/3) 13*atan(4/3) -2*log(25) + 2*log(34) - ------------ + ------------ 3 3
=
13*atan(5/3) 13*atan(4/3) -2*log(25) + 2*log(34) - ------------ + ------------ 3 3
-2*log(25) + 2*log(34) - 13*atan(5/3)/3 + 13*atan(4/3)/3
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.