化简n sqrt ({(1+{x)^2)}^3}=。

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

[题目]-|||-设 =sqrt (1+{x)^2} ,则 dy= __ ; ^n= __

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

int tan sqrt (1+{x)^2}cdot dfrac (xdx)(sqrt {1+{x)^2}}

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

求定积分(int )_(1)^sqrt (3)dfrac (1)({x)^2sqrt (1+{x)^2}}dx求定积分

(19) int tan sqrt (1+{x)^2}cdot dfrac (xdx)(sqrt {1+{x)^2}}-|||-(20) int dfrac (

(19) int tan sqrt (1+{x)^2}cdot dfrac (xdx)(sqrt {1+{x)^2}}-|||-(20) int dfrac (

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

求下列定积分:-|||-(10) (int )_(1)^sqrt (3)dfrac (dx)({x)^2sqrt (1+{x)^2}}