1 / | | 3*x - 7 | ------------- dx | 2 | x + 4*x + 13 | / 0
Integral((3*x - 7)/(x^2 + 4*x + 13), (x, 0, 1))
/ | | 3*x - 7 | ------------- dx | 2 | x + 4*x + 13 | /
2*x + 4 3*------------- /-13 \ 2 |----| 3*x - 7 x + 4*x + 13 \ 9 / ------------- = --------------- + -------------- 2 2 2 x + 4*x + 13 / x 2\ |- - - -| + 1 \ 3 3/
/ | | 3*x - 7 | ------------- dx | 2 = | x + 4*x + 13 | /
/ | | 1 / 13* | -------------- dx | | 2 | 2*x + 4 | / x 2\ 3* | ------------- dx | |- - - -| + 1 | 2 | \ 3 3/ | x + 4*x + 13 | | / / - ----------------------- + --------------------- 9 2
/ | | 2*x + 4 3* | ------------- dx | 2 | x + 4*x + 13 | / --------------------- 2
2 u = x + 4*x
/ | | 1 3* | ------ du | 13 + u | / 3*log(13 + u) -------------- = ------------- 2 2
/ | | 2*x + 4 3* | ------------- dx | 2 | x + 4*x + 13 | / 2 \ / 3*log\13 + x + 4*x/ --------------------- = -------------------- 2 2
/ | | 1 -13* | -------------- dx | 2 | / x 2\ | |- - - -| + 1 | \ 3 3/ | / ------------------------ 9
2 x v = - - - - 3 3
/ | | 1 -13* | ------ dv | 2 | 1 + v | / -13*atan(v) ---------------- = ----------- 9 9
/ | | 1 -13* | -------------- dx | 2 | / x 2\ | |- - - -| + 1 | \ 3 3/ /2 x\ | -13*atan|- + -| / \3 3/ ------------------------ = --------------- 9 3
/2 x\ 13*atan|- + -| / 2 \ \3 3/ 3*log\13 + x + 4*x/ C - -------------- + -------------------- 3 2
/ /2 x\ | 13*atan|- + -| / 2 \ | 3*x - 7 \3 3/ 3*log\13 + x + 4*x/ | ------------- dx = C - -------------- + -------------------- | 2 3 2 | x + 4*x + 13 | /
13*pi 3*log(13) 3*log(18) 13*atan(2/3) - ----- - --------- + --------- + ------------ 12 2 2 3
=
13*pi 3*log(13) 3*log(18) 13*atan(2/3) - ----- - --------- + --------- + ------------ 12 2 2 3
-13*pi/12 - 3*log(13)/2 + 3*log(18)/2 + 13*atan(2/3)/3
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.