1 / | | 3*x + 7 | ------------- dx | 2 | x + 8*x + 17 | / 0
Integral((3*x + 7)/(x^2 + 8*x + 17), (x, 0, 1))
/ | | 3*x + 7 | ------------- dx | 2 | x + 8*x + 17 | /
2*x + 8 3*------------- /-5 \ 2 |---| 3*x + 7 x + 8*x + 17 \ 1 / ------------- = --------------- + ------------- 2 2 2 x + 8*x + 17 (-x - 4) + 1
/ | | 3*x + 7 | ------------- dx | 2 = | x + 8*x + 17 | /
/ | | 2*x + 8 3* | ------------- dx | 2 / | x + 8*x + 17 | | | 1 / - 5* | ------------- dx + --------------------- | 2 2 | (-x - 4) + 1 | /
/ | | 2*x + 8 3* | ------------- dx | 2 | x + 8*x + 17 | / --------------------- 2
2 u = x + 8*x
/ | | 1 3* | ------ du | 17 + u | / 3*log(17 + u) -------------- = ------------- 2 2
/ | | 2*x + 8 3* | ------------- dx | 2 | x + 8*x + 17 | / 2 \ / 3*log\17 + x + 8*x/ --------------------- = -------------------- 2 2
/ | | 1 -5* | ------------- dx | 2 | (-x - 4) + 1 | /
v = -4 - x
/ | | 1 -5* | ------ dv = -5*atan(v) | 2 | 1 + v | /
/ | | 1 -5* | ------------- dx = -5*atan(4 + x) | 2 | (-x - 4) + 1 | /
/ 2 \ 3*log\17 + x + 8*x/ C - 5*atan(4 + x) + -------------------- 2
/ | / 2 \ | 3*x + 7 3*log\17 + x + 8*x/ | ------------- dx = C - 5*atan(4 + x) + -------------------- | 2 2 | x + 8*x + 17 | /
3*log(17) 3*log(26) -5*atan(5) + 5*atan(4) - --------- + --------- 2 2
=
3*log(17) 3*log(26) -5*atan(5) + 5*atan(4) - --------- + --------- 2 2
-5*atan(5) + 5*atan(4) - 3*log(17)/2 + 3*log(26)/2
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.