17. (本小题满分10分)已知函数6ec8aac122bd4f6e的定义域为6ec8aac122bd4f6e，值域为6ec8aac122bd4f6e。求6ec8aac122bd4f6e的最小值。                                                                    

 

 

 

 

 

 

 

 

 

 

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