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