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    The error of the ruler that measured the length of V and U had an error of 0.05cm, however what happens when we want the errors of 1/U and 1/V?
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    (Original post by Mulkeen)
    The error of the ruler that measured the length of V and U had an error of 0.05cm, however what happens when we want the errors of 1/U and 1/V?
    Hello,

    As 1/U (or 1/V) is equivalent to U-1 (or V-1), I would imagine that you would multiply the proportional uncertainty by -1. As uncertainties can be added or subtracted, this is just equivalent to the original proportional uncertainty.

    e.g. If U = 2cm, the proportional uncertainty is 2.5%. The gives 1/U the final value of 0.5cm-1 with an uncertainty of 2.5% (or 0.0125cm-1 either way). I hope that this has been helpful.
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    (Original post by Mulkeen)
    The error of the ruler that measured the length of V and U had an error of 0.05cm, however what happens when we want the errors of 1/U and 1/V?
    In the case of powers the relative uncertainty is multiplied by the power (its absolute value is taken).
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    (Original post by Phichi)
    In the case of powers the relative uncertainty is multiplied by the power (its absolute value is taken).
    So could give me an example if U=5cm +/- 0.05cm please? What would the error in 1/U be?
 
 
 
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