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解答兩條數學題plz.
發問:
3.The weight of Judy is measured as 43.0 kg, correct to the nearest 0.5 kg. For the measured weight, find (a)the relative error, (b)the percentage error, correct to 2 significant figures. 4.The weight of a canera is 1.25 kg, correct to the nearest 10 kg. Find (a)the relative error, (b)the percentage error.
最佳解答:
3a) The relative error = 0.5/2 /43 = 0.25/43 = 1/172 3b) The percentage error = 1/172 x 100% = 0.581% (corr.to 3 s.f.) 第四條，我覺得有問題....... 1.25 kg 的相機，怎麼能 corr to 10kg? 若果冇錯的話，應該這樣做吧...... 4a) The relative error = 10/2 / 1.25 = 5/1.25 = 4kg 4b) The percentage error = 4 x 100% = 400% 你都是覺得第四條有問題，不如你看清楚題目有沒有錯吧...... 2011-08-10 23:02:02 補充： 你 ---> 我 ，打錯了... sorry!
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