Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x + 8| ? 0.1, |y - 6| ? 0.1
A. |E| ? 0.04
B. |E| ? 0.02
C. |E| ? 0.01
D. |E| ? 0
Answer: D
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