已知函数 (x)=-dfrac (1)(2)(x)^2+3x-2ln x，则函数 (x)=-dfrac (1)(2)(x)^2+3x-2ln x的单调递减区间为_____．

函数(x)=dfrac (1)(3)(x)^3+dfrac (1)(2)(x)^2的单调递增区间是( )A．(x)=dfrac (1)(3)(x)^

设函数 (x)=(e)^dfrac (1{x-1)}dfrac (ln |x+2|)({x)^2+x-6}求(x)=(e)^dfrac (1{x-1)}dfra

求下列函数的定义域（1）=arcsin dfrac (2x-1)(3)+ln (2-(x)^2)（2）=arcsin dfrac (2x-1)(3)+ln (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

求函数 (x)=x-dfrac (3)(2)(x)^2/3 的单调区间和极值.

函数f(x)=2x3-3x2的单调递减区间为( ).A. (-∞,0]B. [0,1]C. [1,2]D. [2,+∞)

求下列函数的导数:-|||-(1) =arcsin (sin x);-|||-(2) =arctan dfrac (1+x)(1-x);-|||-(3) =ln

求下列函数的导数:-|||-(1) =arcsin (sin x);-|||-(2) =arctan dfrac (1+x)(1-x);-|||-(3) =ln

下列函数中,是偶函数的是() ()-|||-(A) (x)=((x)^2+1)(sin )^3x (B) (x)=ln (x+sqrt ({x)^2+(a)^2

函数(x)=(x)^3+(x)^2-x-1的单调递减区间为（ ）(x)=(x)^3+(x)^2-x-1(x)=(x)^3+(x)^2-x-1(x)=(x)