(int )_(1)^edfrac (dx)(xsqrt {1-{(ln x))^2}}.

积分 (int )_(-1)^edfrac (1)(x)dx=ln e-ln |-1|=1 (int )_(-1)^edfrac (1)(x)dx=ln e-l

(13)(int )_(1)^edfrac (ln x)(x)dx;

(int )_(1)^edfrac (ln x)(x)dx..

int_(1)^e^2 ((rm dx)/(xsqrt(1+ln x)) )$\int_{1}^{e^2} {\frac{\rm dx}{x\sqrt{1+\l

计算定积分(int )_(1)^edfrac (2+ln x)(x)dx.计算定积分.

计算定积分(int )_(1)^edfrac (ln x)(x)dx.计算定积分

(2) int xsqrt (x-1)dx;

(13)int(dx)/(xsqrt(x^2)-1);(13)$\int\frac{dx}{x\sqrt{x^{2}-1}};$

int dfrac (dx)(xsqrt {{x)^2-1}}=____________________________

1.计算下列定积分:-|||-(16)(int )_(1)^(e^2)dfrac (dx)(xsqrt {1+ln x)};