1 / | | 2 | ------ dx | 2 | 9 + x | / 0
Integral(2/(9 + x^2), (x, 0, 1))
/ | | 2 | ------ dx | 2 | 9 + x | /
/2\ |-| 2 \9/ ------ = ---------- 2 2 9 + x /-x \ |---| + 1 \ 3 /
/ | | 2 | ------ dx | 2 = | 9 + x | /
/ | | 1 2* | ---------- dx | 2 | /-x \ | |---| + 1 | \ 3 / | / ------------------ 9
/ | | 1 2* | ---------- dx | 2 | /-x \ | |---| + 1 | \ 3 / | / ------------------ 9
-x v = --- 3
/ | | 1 2* | ------ dv | 2 | 1 + v | / 2*atan(v) -------------- = --------- 9 9
/ | | 1 2* | ---------- dx | 2 | /-x \ | |---| + 1 | \ 3 / /x\ | 2*atan|-| / \3/ ------------------ = --------- 9 3
/x\ 2*atan|-| \3/ C + --------- 3
/ /x\ | 2*atan|-| | 2 \3/ | ------ dx = C + --------- | 2 3 | 9 + x | /
2*atan(1/3) ----------- 3
=
2*atan(1/3) ----------- 3
2*atan(1/3)/3
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.