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

Question 75

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) =ln(8x+7y) f ( x , y ) = \ln ( 8 x + 7 y ) at (1,1) ;R:x10.1,y10.1( 1,1 ) ; R : | x - 1 | \leq 0.1 , | y - 1 | \leq 0.1


A) E0.007| \mathrm { E } | \leq 0.007
B) E0.0057| \mathrm { E } | \leq 0.0057
C) E0.0089| E | \leq 0.0089
D) E0.0047| \mathrm { E } | \leq 0.0047

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