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Find an Upper Bound for the Magnitude |E| of the Error

Question 272

Multiple Choice

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.
- f(x,y) =4x+7y5 at (10,9) ;R:x100.1,y+90.1f ( x , y ) = 4 x + 7 y - 5 \text { at } ( 10 , - 9 ) ; R : | x - 10 | \leq 0.1 , | y + 9 | \leq 0.1


A) E0.01| E | \leq 0.01
B) E0.04| E | \leq 0.04
C) E0| E | \leq 0
D) E0.02| E | \leq 0.02

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