下列计算错误的是 （）。A int dfrac (1)(x)dx=ln |x|+C B int dfrac (1)(x)dx=ln |x|+C C int dfrac (1)(x)dx=ln |x|+CD int dfrac (1)(x)dx=ln |x|+C

求不定积分int dfrac (1)(2x)sqrt (ln x)dx=（）.int dfrac (1)(2x)sqrt (ln x)dx=int dfrac

int dfrac (1)(sqrt {x)}ln sqrt (x)dx

int dfrac (ln x-1)({x)^2}dx=______________________

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

求：int dfrac (1-ln x)({(x-ln x))^2}dx求：

则 int xf(x)dx= () .-|||-A、 dfrac (1-ln x)({x)^2}+C B、 dfrac (1)(x)+c C、 ln x-x+C

(int )_(1)^(e^2)dfrac (ln x)(sqrt {x)}dx= __

求不定积分int [ ln (ln x)+dfrac (1)(ln x)] dx-|||-__。求不定积分。

(4) (int )_(1)^4dfrac (ln x)(sqrt {x)}dx

(8) (int )_(1)^4dfrac (ln x)(sqrt {x)}dx;