=log2[√(7/48)]+log2(12)-log2(√42)
=log2[√(7/48)*12÷√42]
=log2[√(1/2)]
=log2[2^(-1/2)]
=-1/2
log2为底数根号7/48为真数+log2为底数12为真数-1/2log2为底数42为真数=?
log2为底数根号7/48为真数+log2为底数12为真数-1/2log2为底数42为真数=?
数学人气:747 ℃时间:2019-08-18 05:12:14
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