求下列函数的二阶导数:-|||-(1) =(cos )^2xcdot ln x;-|||-(2) =dfrac (x)(sqrt {1-{x)^2}}

1.求下列函数的二阶导数:-|||-(12) =ln (x+sqrt (1+{x)^2}).

函数(x)=dfrac (ln |x|)(sqrt {1-{x)^2}}的定义域是 A(x)=dfrac (ln |x|)(sqrt {1-{x)^2}} B

7.求下列函数的导数:-|||-(1) =arcsin (1-2x) ;-|||-(2) =dfrac (1)(sqrt {1-{x)^2}} ;-|||-(3

=dfrac (arcsin x)(x)+dfrac (1)(2)ln dfrac (1-sqrt {1-{x)^2}}(1+sqrt {1-{x)^2}}

设=ln sqrt (dfrac {1-x)(1-{x)^2}}则 dy|=ln sqrt (dfrac {1-x)(1-{x)^2}}设则dy|

(2) =sin 2xcdot (e)^x ;-|||-(3) =xcos x; ...-|||-(4) =dfrac (1)(1-{x)^2} ;-|||-(

3.设f(x)存在,求下列函数的二阶导数 dfrac ({d)^2y}(d{x)^2} =-|||-(1) =f((x)^2) :-|||-(2) =ln [

3.设f"(x)存在,求下列函数的二阶导数 dfrac ({d)^2y}(d{x)^2} =-|||-(1) =f((x)^2) : (2) =ln [ f(x

设=dfrac (arcsin x)(sqrt {1-{x)^2}}（1）证明：=dfrac (arcsin x)(sqrt {1-{x)^2}}（2）求=df

12.求下列函数的导数:-|||-(1) =(e)^-x((x)^2-2x+3) ;-|||-(2) =(sin )^2xcdot sin ((x)^2) ;-