3 / | | 2 | ------- dx | 2 | 36 + x | / 1
Integral(2/(36 + x^2), (x, 1, 3))
/ | | 2 | ------- dx | 2 | 36 + x | /
/2 \ |--| 2 \36/ ------- = ---------- 2 2 36 + x /-x \ |---| + 1 \ 6 /
/ | | 2 | ------- dx | 2 = | 36 + x | /
/ | | 1 | ---------- dx | 2 | /-x \ | |---| + 1 | \ 6 / | / ---------------- 18
/ | | 1 | ---------- dx | 2 | /-x \ | |---| + 1 | \ 6 / | / ---------------- 18
-x v = --- 6
/ | | 1 | ------ dv | 2 | 1 + v | / atan(v) ------------ = ------- 18 18
/ | | 1 | ---------- dx | 2 | /-x \ | |---| + 1 | \ 6 / /x\ | atan|-| / \6/ ---------------- = ------- 18 3
/x\ atan|-| \6/ C + ------- 3
/ /x\ | atan|-| | 2 \6/ | ------- dx = C + ------- | 2 3 | 36 + x | /
atan(1/6) atan(1/2) - --------- + --------- 3 3
=
atan(1/6) atan(1/2) - --------- + --------- 3 3
-atan(1/6)/3 + atan(1/2)/3
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.