1
/
| 2
| 2 log(2) pi pi
| x*atan (x) dx = ------ - -- + ---
| 2 4 16
/
0
$${{8\,\log 2+\pi^2-4\,\pi}\over{16}}$$
Ответ (Неопределённый)
[src] /
| 2 / 2\ 2 2
| 2 atan (x) log\1 + x / x *atan (x)
| x*atan (x) dx = C + -------- + ----------- + ----------- - x*atan(x)
| 2 2 2
/
$${{\log \left(x^2+1\right)-\arctan ^2x}\over{2}}+{{x^2\,\arctan ^2x
}\over{2}}-\left(x-\arctan x\right)\,\arctan x$$