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已知lg2=a,lg3=b,求log2 12的值
2为底数,12为真数!
人气:213 ℃ 时间:2020-03-28 20:04:47
解答
log2(12)
=log2(4)+log2(3)
=2+log2(3)
=2+lg3/lg2
=2+b/a
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