1 / | | 4 | ------ dx | 2 | x + 9 | / 0
Integral(4/(x^2 + 9), (x, 0, 1))
/ | | 4 | ------ dx | 2 | x + 9 | /
/4\ |-| 4 \9/ ------ = ---------- 2 2 x + 9 /-x \ |---| + 1 \ 3 /
/ | | 4 | ------ dx | 2 = | x + 9 | /
/ | | 1 4* | ---------- dx | 2 | /-x \ | |---| + 1 | \ 3 / | / ------------------ 9
/ | | 1 4* | ---------- dx | 2 | /-x \ | |---| + 1 | \ 3 / | / ------------------ 9
-x v = --- 3
/ | | 1 4* | ------ dv | 2 | 1 + v | / 4*atan(v) -------------- = --------- 9 9
/ | | 1 4* | ---------- dx | 2 | /-x \ | |---| + 1 | \ 3 / /x\ | 4*atan|-| / \3/ ------------------ = --------- 9 3
/x\ 4*atan|-| \3/ C + --------- 3
/ /x\ | 4*atan|-| | 4 \3/ | ------ dx = C + --------- | 2 3 | x + 9 | /
4*atan(1/3) ----------- 3
=
4*atan(1/3) ----------- 3
4*atan(1/3)/3
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.