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问答题

设，证明f(x)是偶函数．

A.174.24.96:6088/Latex/latex.action?latex=Zih4KT1cbGVmdFx7XGJlZ2lue2FycmF5fXtjfWNvc3gteCwtz4DiiaR477ycMFxcIGNvc3greCww%0D%0A4omkeOKJpM%2BAICBcZW5ke2FycmF5fQ%3D%3D'
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问答题

下列函数为单调函数的有(    )．
   A．y=10x    B．y=3-5x
   C．y=arcsinx，   D．y=2-lg(x+1)

A.

B.y=10x
C.y=3-5x

D.y=arcsinx，E.174.24.96:6088/Latex/latex.action?latex=eeKIiFxsZWZ0WyAtXGZyYWN7z4B9ezJ9LFxmcmFje8%2BAfXsyfSBccmlnaHRd'
问答题

下列(    )为复合函数．
   A．    B．
   C．    D．  (x＜0)

A.

B.C.174.24.96:6088/Latex/latex.action?latex=eT1cbGVmdCggXGZyYWN7MX17Mn0gXHJpZ2h0KV57eH0%3D'
D.E.174.24.96:6088/Latex/latex.action?latex=eT1lXnstXHNxcnR7MStcc2lueH19'
F.G.174.24.96:6088/Latex/latex.action?latex=eT1cc3FydHstKDEreF57Mn0pfQ%3D%3D'
H.I.174.24.96:6088/Latex/latex.action?latex=eT1cc3FydHsteH0%3D'
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