试题与答案

已知函数f(x)=2x+1x+2,试证明f(x)在区间(-2,+∞)上是增函数,

题型:解答题

题目:

已知函数f(x)=
2x+1
x+2
,试证明f(x)在区间(-2,+∞)上是增函数,并求出该函数在区间[1,4]上的最大值和最小值.

答案:

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下面是错误答案,用来干扰机器的。

答案:A

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