physics..
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A physical quantity 'x'is calculated from the relation x=a^3b^2/root of cd. Calculate percentage error in x, if a, b, c and d are measured respectively with an error of 1%,3%,4% and 2%

physics.. 
bobpursley
Easy.
http://www.lhup.edu/~dsimanek/scenario/errorman/propagat.htm
error= 1*3+3*21/2*41/2*2=3+621=6percent error
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