试题与答案

二次函数y=x2-（m+1）x+1，当x≥1时，y随x的增大而增大，则m的取值范

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题型：选择题

题目：

二次函数y=x2-（m+1）x+1，当x≥1时，y随x的增大而增大，则m的取值范围是 [ ]

A．m≤1

B．m≥1

C．m≥-3

D．m≤-3

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A, B, C, D, E

考点：二次函数的图像
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