An experiment measures quantites `a, b, c` and `X` is calculated from the formula
`X = (ab^(2))/(c^(3))`
If the percentage errors in `a,b,c` are `+- 1%, +- 3%, +- 2%` respectively, the perentage error in `X` can be

Explanation

Here, `(Deltaa)/(a) xx 100=+-1%,(Deltab)/(b) xx 100=+-3%,(Deltac)/(c) xx 100=+-2%`
`x=(ab^(2))/(c^(3))`
Maximum percentage error in x is
`(Deltax)/(x) xx 100=(Deltaa)/(a) xx 100+2(Deltab)/(b) xx 100+3(Deltac)/(c) xx 100`
`=1+(2 xx 3)+(3 xx 2)=13%`
Maximum percentage error is x is 13%