试题与答案

已知函数f(x)=alnx+1x-1(a≠0)在(0,12)内有极值.(I)求实

题型:解答题

题目:

已知函数f(x)=alnx+
1
x-1
(a≠0)在(0,
1
2
)内有极值.
(I)求实数a的取值范围;
(II)若x1∈(0,
1
2
),x2∈(2,∞)且a∈[
1
2
,2]时,求证:f(x1)-f(x2)≥ln2+
3
4

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

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