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已知f(x)是定义在R上的奇函数,当x≥0时,f(x)=x2-2x,则当x<0时...
已知f(x)是定义在R上的奇函数,当x≥0时,f(x)=x2-2x,则当x<0时,f(x)= .
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设y=f(x)是偶函数,对于任意正数x都有f(x+2)=-2f(2-x),已知f(-1)=4,则f(-3)等于( )
A.2
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若任取x
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成立,则称f(x) 是[a,b]上的凸函数.试问:在下列图象中,是凸函数图象的为( )
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α
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