=ln (x+sqrt ({a)^2+(x)^2});
8 ) =ln (x+sqrt ({a)^2+(x)^2}) );
[题目]设 (x)=ln (x+sqrt ({x)^2+(a)^2}) (a为常数),则-|||-(x)= __
函数 y=ln (x+sqrt(x^2+1)) 是()。A. 奇函数B. 偶函数C. 非奇非偶函数D. 既是奇函数又是偶函数
求ln sqrt ({x)^2+(y)^2}=arctan dfrac (y)(x)的导数(dy)/(dx).求的导数$\frac{dy}{dx}$.
[题目]求导数: =ln (x+sqrt (1+{x)^2})
已知(x,y)=(e)^x+(y-2)arcsin sqrt ({x)^2+(y)^2},求(x,y)=(e)^x+(y-2)arcsin sqrt ({x)^
[题目]-|||-求函数 (x,y)=(x)^2(2+(y)^2)+yln y 的极值.
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