1 / ____\ / ____ \ / ____ \ / ____ \
/ ____ |I*\/ 21 | ____ | I*\/ 21 | ____ |-I*\/ 21 | ____ |I*\/ 21 |
| I*\/ 21 *log|--------| I*\/ 21 *log|- -------- + tan(1/2)| I*\/ 21 *log|----------| I*\/ 21 *log|-------- + tan(1/2)|
| 1 \ 3 / \ 3 / \ 3 / \ 3 /
| ------------ dx = - ---------------------- - ----------------------------------- + ------------------------ + ---------------------------------
| 5 + 2*cos(x) 21 21 21 21
|
/
0
$${{2\,\arctan \left({{\sqrt{21}\,\sin 1}\over{7\,\cos 1+7}}\right)
}\over{\sqrt{21}}}$$
Ответ (Неопределённый)
[src] / ____ \ / ____ \
/ ____ | I*\/ 21 /x\| ____ |I*\/ 21 /x\|
| I*\/ 21 *log|- -------- + tan|-|| I*\/ 21 *log|-------- + tan|-||
| 1 \ 3 \2// \ 3 \2//
| ------------ dx = C - --------------------------------- + -------------------------------
| 5 + 2*cos(x) 21 21
|
/
$${{2\,\arctan \left({{3\,\sin x}\over{\sqrt{21}\,\left(\cos x+1
\right)}}\right)}\over{\sqrt{21}}}$$