(5)int ln^2(x+sqrt(1+x^2))dx;

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

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

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

(int )_(-1)^1((x+sqrt {1-{x)^2})}^2dx=

设 gt 0, 求 (int )_(-a)^asqrt ({a)^2-(x)^2}ln dfrac (x+sqrt {1+{x)^2}}(3)dx,

设 gt 0, 则 =(int )_(-a)^asqrt ({a)^2-(x)^2}ln dfrac (x+sqrt {1+{x)^2}}(3)dx= __

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

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