alleryFor Q = A²/B, fractional error:
A2a + b (exponent doubles A's error)
Ba + b
Ca - 2b
Da × b
Answer & Solution
Correct answer: A. 2a + b (exponent doubles A's error)
ΔQ/Q = 2(ΔA/A) + (ΔB/B).
Each power n multiplies the corresponding relative error by n.
For Q = AⁿBᵐ: ΔQ/Q = |n|(ΔA/A) + |m|(ΔB/B).
All take absolute values.
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