Find the Products AB and BA to Determine Whether B

question 46

Multiple Choice

Find the products AB and BA to determine whether B is the multiplicative inverse of A.
- $A = \left[ \begin{array} { r r } - 5 & - 1 \\ 6 & 0 \end{array} \right] , \quad B = \left[ \begin{array} { c } 0 \frac { 1 } { 6 } \\ - 1 \frac { 5 } { 6 } \end{array} \right]$

• A) \(B \neq A ^ { - 1 }\)
• B) \(B = A ^ { - 1 }\)

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