设a<b,函数y=(x-a)2(x-b)的图像可能是                  

ab,函数y(xa)2(xb)的图像可能是                            (  )

答案

C

解析 由解析式可知,当xb时,f(x)0,由此可以排除AB选项.又当xb时,f(x)≤0,从而可以排除D.故本题选择C.

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