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