How do I calculate these Uncertainties?

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To calculate the uncertainty for F in the equation F = F1 + F2 - dF1F2, first determine the uncertainty in the product term dF1F2 using the multiplication rule. This involves calculating the relative uncertainties for F1 and F2. Once you have the uncertainty for the product, treat it as a new value with its own uncertainty. Finally, apply the addition/subtraction rule to combine the uncertainties of F1, F2, and the product term. This method ensures an accurate representation of the overall uncertainty in F.
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Okay, so I have this equation:

F = F1 + F2 - dF1F2

Anyways, I have the uncertainties for F1 and F2, how would I go about getting the uncertainty for F?

Do I just simply add the uncertainties or do I use the formula deltaF1/F1 +deltaF2/F2 = deltaF/F?

Thanks for your help.
 
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First find the uncertainty in the product term using the appropriate rule for multiplication then treat that partial result as a new value with its own uncertainty. Use the rule for addition/subtraction when you sum the remaining values.
 
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