若函数(ln x-1)=3(x)^2+2x-1，则(ln x-1)=3(x)^2+2x-1=A -1B 0C 2D 4

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

（2）已知函数f(x)= ) 2(x-1),xlt 1 ln x,xgeqslant 1 .（2）已知函数，则的一个原函数是（ ）A、B、C、D、

已知函数(x)=2(x)^3+(x)^2+2x-1定义在区间[-1,1]上,在空间(x)=2(x)^3+(x)^2+2x-1上求函数(x)=2(x)^3+(x)

若(x)=(x)^2ln x,则(x)=(x)^2ln x( )A.0B.1C.2D.3若,则()A.0B.1C.2D.3

曲线y=(x-1 )3√x^2的凹区间为（ ）y=(x-1 )3√x^2y=(x-1 )3√x^2y=(x-1 )3√x^2y=(x-1 )3√x^2曲线的凹区

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

设(x)=(x)^2 (x)=x-1,求复合函数(x)=(x)^2 (x)=x-1,____ .(x)=(x)^2 (x)=x-1,(x)=(x)^2 (x)=

设函数=dfrac ({x)^2}(x-1),则=dfrac ({x)^2}(x-1)=________.设函数,则=________.

2 , 1 B . 1 , 2 C . (x)=dfrac ({e)^x-1}(x), 1D . (x)=dfrac ({e)^x-1}(x), 2设函数，若当

=dfrac {1)(ln 3)(x-1)+1 D. =ln dfrac (1)(3)(x-1)