What is the expression for the perturbation error Δpi? – McqOptions

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1.	What is the expression for the perturbation error Δpi?
A.	\(\sum_{k=1}^N \frac{∂p_i}{∂a_k} \Delta a_k\)
B.	\(\sum_{k=1}^N p_i \Delta a_k\)
C.	\(\sum_{k=1}^N \Delta a_k\)
D.	None of the mentioned
Answer» B.

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