Ah, to be honest, the textbook says you use those partial derivative formulas, adding the squares of relative errors and such. But I only learned that last week, when my professor caught me napping. What to do? In our cashew farm, if the weighing scale is old *and* the jute sack size varies, we just call it 'approximately one quintal' and hope for the best. Theory is for the lab; life is often 'adjust karo, bas'.
#exams#study
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