1 / | | x | ------------ dx | 2 | x - 2*x + 4 | / 0
/ | | x | 1*------------ dx | 2 | x - 2*x + 4 | /
/ 1*2*x - 2 \ |--------------| | 2 | x \1*x - 2*x + 4/ 1 ------------ = ---------------- + ---------------------------- 2 2 / 2 \ x - 2*x + 4 |/ ___ ___\ | ||-\/ 3 \/ 3 | | 3*||-------*x + -----| + 1| \\ 3 3 / /
/ | | x | 1*------------ dx | 2 = | x - 2*x + 4 | /
/ | | 1 / | ------------------------ dx | | 2 | 1*2*x - 2 | / ___ ___\ | -------------- dx | |-\/ 3 \/ 3 | | 2 | |-------*x + -----| + 1 | 1*x - 2*x + 4 | \ 3 3 / | | / / -------------------- + ------------------------------ 2 3
/ | | 1*2*x - 2 | -------------- dx | 2 | 1*x - 2*x + 4 | / -------------------- 2
2 u = x - 2*x
/ | | 1 | ----- du | 4 + u | / log(4 + u) ----------- = ---------- 2 2
/ | | 1*2*x - 2 | -------------- dx | 2 | 1*x - 2*x + 4 | / 2 \ / log\4 + x - 2*x/ -------------------- = ----------------- 2 2
/ | | 1 | ------------------------ dx | 2 | / ___ ___\ | |-\/ 3 \/ 3 | | |-------*x + -----| + 1 | \ 3 3 / | / ------------------------------ 3
___ ___ \/ 3 x*\/ 3 v = ----- - ------- 3 3
/ | | 1 | ------ dv | 2 | 1 + v | / atan(v) ------------ = ------- 3 3
/ | | 1 | ------------------------ dx | 2 | / ___ ___\ | |-\/ 3 \/ 3 | | |-------*x + -----| + 1 / ___ ___\ | \ 3 3 / ___ | \/ 3 x*\/ 3 | | \/ 3 *atan|- ----- + -------| / \ 3 3 / ------------------------------ = ----------------------------- 3 3
/ ___ ___\ ___ | \/ 3 x*\/ 3 | / 2 \ \/ 3 *atan|- ----- + -------| log\4 + x - 2*x/ \ 3 3 / C + ----------------- + ----------------------------- 2 3
/ ___ \ / ___ |\/ 3 *(-1 + x)| | / 2 \ \/ 3 *atan|--------------| | x log\4 + x - 2*x/ \ 3 / | ------------ dx = C + ----------------- + -------------------------- | 2 2 3 | x - 2*x + 4 | /
___ log(3) log(4) pi*\/ 3 ------ - ------ + -------- 2 2 18
=
___ log(3) log(4) pi*\/ 3 ------ - ------ + -------- 2 2 18
Данные примеры также можно применять при вводе верхнего и нижнего предела интегрирования.