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