(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm writing up a prac, which involves calculating the uncertainty for 1/(xy)^0.5.

There are two formulas that I think apply:

2. Relevant equations

For R = xy, u(R)/R = u(x)/x + u(y)/y

and

using differentials in calculus

dR = (dR/dx)dx + (dR/dy)dy [note that dR/dr and dR/dy are partials]

3. The attempt at a solution

I found the latter formula in a calculus textbook. It does not appear in the lab manual. However, I'm thrown by the fact that R depends on the square root of xy. I'm not sure if the first formula applies in this case.

Does anyone know the right approach?

Thanks

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# Homework Help: How should I calculate uncertainties?

Can you offer guidance or do you also need help?

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