[题目]设 (x)=ln (x+sqrt ({x)^2+(a)^2}) (a为常数),则-|||-'(x)= __

=ln (x+sqrt ({a)^2+(x)^2});

[题目]已知函数 =ln (x+sqrt ({a)^2+(x)^2}) 求y`.

8 ) =ln (x+sqrt ({a)^2+(x)^2}) );

[题目]求导数: =ln (x+sqrt (1+{x)^2})

(2) (x)=ln (x+sqrt (1+{x)^2});

[题目]设函数 =ln dfrac (sqrt {{x)^2+1}}(sqrt [3]{x+2)}(xgt -2), 则 (0)= ()-|||-

求极限 lim _(xarrow +infty )dfrac (ln (x+sqrt {{x)^2+1})-ln (x+sqrt ({x)^2-1})}( l

求lim _(xarrow infty )dfrac (ln (x+sqrt {{x)^2+1)}-ln (x+sqrt ({x)^2-1})}({({e)^d

若 (x)=ln (x+sqrt (1+{x)^2}) 则 (x)=dfrac (1)(sqrt {1+{x)^2}}-|||-5-|||-○ C.若 (x)=

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