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x=lg2/lg1.08怎么算?要用已知(下列数据供参考：lg2=0.3010,lg5.4=0.7324,lg5.5=0.7404,lg5.6=0.7482)
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x=lg2/lg1.08怎么算?要用已知
(下列数据供参考：lg2=0.3010,lg5.4=0.7324,lg5.5=0.7404,lg5.6=0.7482)
(下列数据供参考：lg2=0.3010,lg5.4=0.7324,lg5.5=0.7404,lg5.6=0.7482)
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答案和解析
x=lg2/lg1.08
=lg2/[lg(10.8/10)]
=lg2/[(lg2*5.4)-lg10]
=lg2/(lg2+lg5.4-1)
=0.3010/(0.3010+0.7324-1)
=0.3010/0.0334
=9.0119760479042
=9.012
=lg2/[lg(10.8/10)]
=lg2/[(lg2*5.4)-lg10]
=lg2/(lg2+lg5.4-1)
=0.3010/(0.3010+0.7324-1)
=0.3010/0.0334
=9.0119760479042
=9.012
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