计算d/dxy-1xln(1+x^2) dx=（）

填空题（每小题4分，本题共20分）拍照题6/15(d)/(dx)int_(-e)^-1xln(1+x^2)dx=____.填空题（每小题4分，本题共20分）拍照

y=(1+x^2)arctan x 求 (d^2 y)/(dx^2) $y=(1+x^2)\arctan x$ 求 $\frac{d^2 y}{dx^2}$

13.计算int x^2sqrt(1+x^2)dx.13.(本题满分10分)计算$\int x^{2}\sqrt{1+x^{2}}dx$.

(2) lim _(xarrow 0)dfrac ({(1-dfrac {1)(2)(x)^2)}^dfrac (2{3)}-1}(xln (1+x))

(B)| (x/(1+2)^2 (1+x^2)^2 dx=0.-|||-(C) (int )_(-1)^1dfrac (1)(sin x)dx=0. (D) (

int xln (x-1)dx; ;

int xln (x-1)dx; ;

int xln (x-1)dx; ;

(8) lim _(xarrow 0)dfrac (1-cos 2x)(xln (1+x)) ;

int dfrac (1+ln x)({(xln x))^2}dx..