f2 maths

2014-12-18 2:53 am
approximation,measurement and errors吾明點做
更新1:

measured valuthe lower limit of the actual value upper limit of the actual value 27500L(cor.to the nearest 10L) 27500L(cor.to the nearest 100L) 12.5mm (cor.to 3 sig.fig.) 14000km(cor.to 2 sig.fig.)

回答 (2)

2014-12-18 5:10 pm
✔ 最佳答案
the lower limit = measured value - maximum error
the actual limit = measured value + maximum error
maximum error = scale / 2

27500L(cor.to the nearest 10L)
maximum error = 10L / 2 = 5L
so, the lower limit is 27495L, the upper limit is 27505L.

27500L(cor.to the nearest 100L)
maximum error = 100L / 2 = 50L
so, the lower limit is 27450L, the upper limit is 27550L.

12.5mm (cor.to 3 sig.fig.)
maximum error = 0.1mm / 2 = 0.05mm
so, the lower limit is 12.45mm, the upper limit is 12.55mm.

14000km (cor.to 2 sig.fig.)
maximum error = 1000km / 2 = 500km
so, the lower limit is 13500km, the upper limit is 14500km.
2014-12-18 4:48 am
你是指absolute error/maximum error , correct to ... significant figures?
可否提供例題?


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