A.xe-x
B.xe-x-ex-1
C.ex-1
D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数fx在0,+∞上连续,且满足,则f(x)是( )。A.xe-xB.xe-x-ex-1C.ex-1D.(x-1)e-x
[单选题]设函数f(u)有连续导数,且f(0)=0,则等于( ).(其中Ω:x2+y2+z2≤t2)A.B.C.D.
[单选题]设函数f(u)有连续导数,且f(0)=0,则等于( ).(其中Ω:x2+y2+z2≤t2)A.B.C.D.