A.yx+2-3yx+1+2yx=0 B.yx-3yx-1+2yx-2=0 C.yx+1-2yx=-8 D.yx+1-2yx=8
A.1,cos2x,sin2x B.1,x,x2 C.sin2x,ex,ex+1 D.0,ex,xrx
設(shè)f(x)可微且滿足,f(0)≠0,則()
A.f(0)是函數(shù)f(x)的極小值 B.(0,f(0))是曲線g=f(x)的拐點 C.f(x)的值域為(-∞,+∞) D.f(0)為f(x)的最大值