偶函数f(x),当x≥0时，f(x)=(1/2)x ,则f(log2 1/3)=key 1/3
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偶函数f(x),当x≥0时，f(x)=(1/2)x ,则f(log2 1/3)=key 1/3解：因为偶函数f(x),所以f(log2 1/3）=f(-log2 1/3）=f(log(2)3) log(2)30,满足x≥0所以f(log2 1/3)=f(log(2)3)=1/2^log(2)3=1/2^log(1/2)1/3=1/3你的题目f(x)=(1/2)x，应该为f(x)=(1/2）＾x