1 / | | 6 | -------- dx | 2 | 2*x + 9 | / 0
Integral(6/(2*x^2 + 9), (x, 0, 1))
/ | | 6 | -------- dx | 2 | 2*x + 9 | /
/6\ |-| 6 \9/ -------- = ---------------- 2 2 2*x + 9 / ___ \ |-\/ 2 | |-------*x| + 1 \ 3 /
/ | | 6 | -------- dx | 2 = | 2*x + 9 | /
/ | | 1 2* | ---------------- dx | 2 | / ___ \ | |-\/ 2 | | |-------*x| + 1 | \ 3 / | / ------------------------ 3
/ | | 1 2* | ---------------- dx | 2 | / ___ \ | |-\/ 2 | | |-------*x| + 1 | \ 3 / | / ------------------------ 3
___ -x*\/ 2 v = --------- 3
/ | | 1 2* | ------ dv | 2 | 1 + v | / 2*atan(v) -------------- = --------- 3 3
/ | | 1 2* | ---------------- dx | 2 | / ___ \ | |-\/ 2 | | |-------*x| + 1 | \ 3 / | / ___\ / ___ |x*\/ 2 | ------------------------ = \/ 2 *atan|-------| 3 \ 3 /
/ ___\ ___ |x*\/ 2 | C + \/ 2 *atan|-------| \ 3 /
/ | / ___\ | 6 ___ |x*\/ 2 | | -------- dx = C + \/ 2 *atan|-------| | 2 \ 3 / | 2*x + 9 | /
/ ___\ ___ |\/ 2 | \/ 2 *atan|-----| \ 3 /
=
/ ___\ ___ |\/ 2 | \/ 2 *atan|-----| \ 3 /
sqrt(2)*atan(sqrt(2)/3)
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.