1.

Given A=\(\begin{bmatrix}2 & -0.1 \\0 & 3 \\\end{bmatrix} A^{-1} = \begin{bmatrix}1/2 & a \\0 & b \\\end{bmatrix}\) then find a + b.

A. \(\frac{6}{20}\)
B. \(\frac{7}{20}\)
C. \(\frac{8}{20}\)
D. \(\frac{5}{20}\)
Answer» C. \(\frac{8}{20}\)


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