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 - 1| ? 0.1, |y + 2| ? 0.1, |z - 3| ? 0.1
A. |E| ? 0.63
B. |E| ? 0.84
C. |E| ? 0.42
D. |E| ? 0.56
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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= 
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Find the determinant of the matrix and determine if the matrix is invertible 
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