数学
换底公式习题在线等2log5(25)-3log2(24)

2019-05-28

换底公式习题在线等
2log5(25)-3log2(24)
优质解答
2log5(25)-3log2(24
=2log 5 (5)^2 -3log2(3*8)
=4log5(5)-3(log2(3)+log2(2^3)
=4-3(log2(3)+3log2(2)
=4-3log2(3)-3
=1-3log2(3)
2log5(25)-3log2(24
=2log 5 (5)^2 -3log2(3*8)
=4log5(5)-3(log2(3)+log2(2^3)
=4-3(log2(3)+3log2(2)
=4-3log2(3)-3
=1-3log2(3)
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