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