A.y=lge·(x-1)                     B.y=(ln10)(x-1)

C.y=x                                  D.y=0

A.sinx·+cosx·                    B.cosx·-sinx·

C.sinx··+cosx·          D.sinx·(-)

A.y=ln                       B.y=ln

C.y=ln(1-x)                        D.y=ln

A.a^-xlna           B.a^-x                     C.-a^-xlna         D.上述都不正确

A.x               B.             C.lnx+1          D.lnx+x

A.2e^2x-e^x           B.2e^2x+e^x         C.2e^2x-e^-x          D.2e^2x+e^-x

(1)y=sin³x+sinx³;

(2)y=()³.