已知函数[img src="https://img.haodaxue.net/uploadimg/image/20200606/20200606174714_14167.png" alt="" />,若f(x)存在唯一的零点x0,且x0>0,则a的取值范围是()
A.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591436952386605.png" />
B.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591436946340206.png" />
C.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591436941439550.png" />
D.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591436936152769.png" />
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正确答案: C 答案分析:无
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