1 / | | x | ------------ dx | 2 | x + 2*x + 4 | / 0
/ | | x | 1*------------ dx | 2 | x + 2*x + 4 | /
/ 1*2*x + 2 \
|--------------| /-1 \
| 2 | |---|
x \1*x + 2*x + 4/ \ 3 /
------------ = ---------------- + ------------------------
2 2 2
x + 2*x + 4 / ___ ___\
|-\/ 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 | /
/ ___\
___ |2*\/ 3 |
\/ 3 *atan|-------| ___
log(7) log(4) \ 3 / pi*\/ 3
------ - ------ - ------------------- + --------
2 2 3 18
=
/ ___\
___ |2*\/ 3 |
\/ 3 *atan|-------| ___
log(7) log(4) \ 3 / pi*\/ 3
------ - ------ - ------------------- + --------
2 2 3 18
Данные примеры также можно применять при вводе верхнего и нижнего предела интегрирования.