(2)由logk≈-20+0.916得k≈10-20+0.916=100.916x10-20 . 0.9030 <0.916 <0.9542 ... 四捨五入取到整數). (參考數值:log1.02~0.0086,log1.04≈0.0170,log1.265~0.1020,.
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