4 / | | 1 | ------------------- dx | 2 ____ 2 | 16 + x *\/ 16 + x | / 0
Integral(1/(16 + x^2*sqrt(16) + x^2), (x, 0, 4))
/ | | 1 | ------------------- dx | 2 ____ 2 | 16 + x *\/ 16 + x | /
1 1 ------------------- = --------------------- 2 ____ 2 / 2 \ 16 + x *\/ 16 + x |/ ___ \ | ||-\/ 5 | | 16*||-------*x| + 1| \\ 4 / /
/ | | 1 | ------------------- dx | 2 ____ 2 = | 16 + x *\/ 16 + x | /
/ | | 1 | ---------------- dx | 2 | / ___ \ | |-\/ 5 | | |-------*x| + 1 | \ 4 / | / ---------------------- 16
/ | | 1 | ---------------- dx | 2 | / ___ \ | |-\/ 5 | | |-------*x| + 1 | \ 4 / | / ---------------------- 16
___ -x*\/ 5 v = --------- 4
/ | | 1 | ------ dv | 2 | 1 + v | / atan(v) ------------ = ------- 16 16
/ | | 1 | ---------------- dx | 2 | / ___ \ | |-\/ 5 | | |-------*x| + 1 / ___\ | \ 4 / ___ |x*\/ 5 | | \/ 5 *atan|-------| / \ 4 / ---------------------- = ------------------- 16 20
/ ___\ ___ |x*\/ 5 | \/ 5 *atan|-------| \ 4 / C + ------------------- 20
/ ___\ / ___ |x*\/ 5 | | \/ 5 *atan|-------| | 1 \ 4 / | ------------------- dx = C + ------------------- | 2 ____ 2 20 | 16 + x *\/ 16 + x | /
___ / ___\ \/ 5 *atan\\/ 5 / ----------------- 20
=
___ / ___\ \/ 5 *atan\\/ 5 / ----------------- 20
sqrt(5)*atan(sqrt(5))/20
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.