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Calculating Profits

Relative erro...

Question

Relative error in Z, given that Z = 1/A² is:

A

square root of error in A

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B

two times the error in A

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C

the square of the error in A

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D

half the error in A

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Solution

The correct option is B
two times the error in A

It is two times the error in A. If two quantities are multiplied or divided the relative error in the result is the sum of the relative errors in the multipliers.

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