int ln (sqrt (1+{x)^2}-x)dx;

求下列不定积分：int ln (sqrt (1+{x)^2}-x)dx。求下列不定积分：。

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

=(int )_(-1)^1(f(x)+f(-x)+x} cdot ln (sqrt (1+{x)^2}+x)dx..

求下列不定积分int ln (x+sqrt (1+{x)^2})dx求下列不定积分

计算下列积分:(3) int (ln )^2(x+sqrt (1+{x)^2})dx ;计算下列积分:(3);

int dfrac (ln x)({(1+{x)^2)}^3/2}dx; ;

int dfrac ({x)^3}(sqrt {1+{x)^2}}dx,

(int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}};

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

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