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函数f(x)=ex-e-x(e为自然对数的底数)( ) A.是奇函数 B.是偶函...
函数f(x)=ex-e-x(e为自然对数的底数)( )
A.是奇函数
B.是偶函数
C.既是奇函数又是偶函数
D.既不是奇函数也不是偶函数
考点分析:
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