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2log(2)根号30-log(2)3-log(2)5 求值
人气:158 ℃ 时间:2020-06-03 13:51:55
解答
2log(2)根号30-log(2)3-log(2)5
=log₂(√30)²-log₂(3×5)
=log₂30-log₂15
=log₂(30/15)
=log₂2
=1
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