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