已知f（x
6）=log
2x，那么f（8）等于（ ）
A.
B. 8
C. 18
D.
人气：255 ℃ 时间：2020-06-28 10:28:28
解答
∵f（x
6）=log
2x，∴f（8）=
f(6)＝＝故选D．
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