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