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