1 / | | 2*x + 2 | ------------ dx | 2 | 2*x + x + 1 | / 0
Integral((2*x + 2)/(2*x^2 + x + 1), (x, 0, 1))
/ | | 2*x + 2 | ------------ dx | 2 | 2*x + x + 1 | /
/ 2*2*x + 1 \ |------------| / 3 \ | 2 | |-----| 2*x + 2 \2*x + x + 1/ \2*7/8/ ------------ = -------------- + ------------------------- 2 2 2 2*x + x + 1 / ___ ___\ |-4*\/ 7 \/ 7 | |--------*x - -----| + 1 \ 7 7 /
/ | | 2*x + 2 | ------------ dx | 2 = | 2*x + x + 1 | /
/ | | 1 / 12* | ------------------------- dx | | 2 | 2*2*x + 1 | / ___ ___\ | ------------ dx | |-4*\/ 7 \/ 7 | | 2 | |--------*x - -----| + 1 | 2*x + x + 1 | \ 7 7 / | | / / ------------------ + ---------------------------------- 2 7
/ | | 2*2*x + 1 | ------------ dx | 2 | 2*x + x + 1 | / ------------------ 2
2 u = x + 2*x
/ | | 1 | ----- du | 1 + u | / log(1 + u) ----------- = ---------- 2 2
/ | | 2*2*x + 1 | ------------ dx | 2 | 2*x + x + 1 | / 2\ / log\1 + x + 2*x / ------------------ = ----------------- 2 2
/ | | 1 12* | ------------------------- dx | 2 | / ___ ___\ | |-4*\/ 7 \/ 7 | | |--------*x - -----| + 1 | \ 7 7 / | / ---------------------------------- 7
___ ___ \/ 7 4*x*\/ 7 v = - ----- - --------- 7 7
/ | | 1 12* | ------ dv | 2 | 1 + v | / 12*atan(v) --------------- = ---------- 7 7
/ | | 1 12* | ------------------------- dx | 2 | / ___ ___\ | |-4*\/ 7 \/ 7 | | |--------*x - -----| + 1 / ___ ___\ | \ 7 7 / ___ |\/ 7 4*x*\/ 7 | | 3*\/ 7 *atan|----- + ---------| / \ 7 7 / ---------------------------------- = ------------------------------- 7 7
/ ___ ___\ /1 2 x\ ___ |\/ 7 4*x*\/ 7 | log|- + x + -| 3*\/ 7 *atan|----- + ---------| \2 2/ \ 7 7 / C + --------------- + ------------------------------- 2 7
/ ___ \ / ___ |4*\/ 7 *(1/4 + x)| | / 2\ 3*\/ 7 *atan|-----------------| | 2*x + 2 log\1 + x + 2*x / \ 7 / | ------------ dx = C + ----------------- + ------------------------------- | 2 2 7 | 2*x + x + 1 | /
/ ___\ / ___\ ___ |\/ 7 | ___ |5*\/ 7 | 3*\/ 7 *atan|-----| 3*\/ 7 *atan|-------| \ 7 / \ 7 / - ------------------- + --------------------- + log(2) 7 7
=
/ ___\ / ___\ ___ |\/ 7 | ___ |5*\/ 7 | 3*\/ 7 *atan|-----| 3*\/ 7 *atan|-------| \ 7 / \ 7 / - ------------------- + --------------------- + log(2) 7 7
-3*sqrt(7)*atan(sqrt(7)/7)/7 + 3*sqrt(7)*atan(5*sqrt(7)/7)/7 + log(2)
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.