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Error and Uncertainty

Two quantitie...

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Two quantities X1 = (3.0 plus or minus 0.1) S.I. units X2 = (6.0 plus or minus 0.2) S.I. units are given and they are combined so that we find value of combination by X' = X1 + X2 and X'' = (X1.X2)/(X1+X2) then (1)find the smaller of the two combinations and (2) Relative error in smaller value of combinations

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