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標題:

percentage error

發問:

A bullet hits an apple at a as red speed of 500 m/s, and he percentage error is 1 %. Find the lower limit and the upper limit of the actual speed of the bullet.

最佳解答:

A bullet hits an apple at a as red speed of 500 m/s, and he percentage error is 1 %. Find the lower limit and the upper limit of the actual speed of the bullet. 最大速度 = 500(1+1%) = 505ms-1 最小速度 = 500(1-1%) = 495ms-1

其他解答:

∵maximum percentage error = maximum absolute error / measured value×100% ∴maximum absolute error = measured value×maximum absolute error The maximum absolute error =500×1 % =5 m/s upper limit = 500+ 5 = 505m/s lower limit = 500﹣5 = 495m/s ∴the actual speed of the bullet is between 495m/s and 505m/s ============================================ maximum absoulte error = 最大絕對誤差 maximum percentage error = 最大百分誤差 upper limit = 上限 lower limit = 下限 ============================================ upper limit = measured value + maximum absoulte error lower limit = measured value﹣maximum absoulte error 上限 = 量度值+ 最大絕對誤差 下限 = 量度值﹣最大絕對誤差|||||嘩! 呢d我都學緊wo 我應該識既呢條 relative error =500*1%=5 the lower limit 500-5 =495 the upper limit =500+5 =505

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