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