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函数的定义域为R,且满足:是偶函数,是奇函数,若=9,则等于 ( ) A.9 B...

函数6ec8aac122bd4f6e的定义域为R,且满足:6ec8aac122bd4f6e是偶函数,6ec8aac122bd4f6e是奇函数,若6ec8aac122bd4f6e=9,则6ec8aac122bd4f6e等于           (   )

   A.6ec8aac122bd4f6e9               B.9               C.6ec8aac122bd4f6e3           D.0

 

B 【解析】 ,.
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