0000:00:00:00:00Start2Number 2ExplanationGiven AAA, BBB, and DDD are matrices with A=(2−143),B=(a2b1),D=3A+BA = \begin{pmatrix} 2 & -1 \\ 4 & 3 \end{pmatrix}, \quad B = \begin{pmatrix} a & 2 \\ b & 1 \end{pmatrix}, \quad D = 3A + BA=(24−13),B=(ab21),D=3A+B If AB=(131711)AB = \begin{pmatrix} 1 & 3 \\ 17 & 11 \end{pmatrix}AB=(117311), then matrix DDD is ....(4179)\begin{pmatrix} 4 & 1 \\ 7 & 9 \end{pmatrix}(4719)(8−11510)\begin{pmatrix} 8 & -1 \\ 15 & 10 \end{pmatrix}(815−110)(941410)\begin{pmatrix} 9 & 4 \\ 14 & 10 \end{pmatrix}(914410)(85136)\begin{pmatrix} 8 & 5 \\ 13 & 6 \end{pmatrix}(81356)(115106)\begin{pmatrix} 11 & 5 \\ 10 & 6 \end{pmatrix}(111056)
2Number 2ExplanationGiven AAA, BBB, and DDD are matrices with A=(2−143),B=(a2b1),D=3A+BA = \begin{pmatrix} 2 & -1 \\ 4 & 3 \end{pmatrix}, \quad B = \begin{pmatrix} a & 2 \\ b & 1 \end{pmatrix}, \quad D = 3A + BA=(24−13),B=(ab21),D=3A+B If AB=(131711)AB = \begin{pmatrix} 1 & 3 \\ 17 & 11 \end{pmatrix}AB=(117311), then matrix DDD is ....(4179)\begin{pmatrix} 4 & 1 \\ 7 & 9 \end{pmatrix}(4719)(8−11510)\begin{pmatrix} 8 & -1 \\ 15 & 10 \end{pmatrix}(815−110)(941410)\begin{pmatrix} 9 & 4 \\ 14 & 10 \end{pmatrix}(914410)(85136)\begin{pmatrix} 8 & 5 \\ 13 & 6 \end{pmatrix}(81356)(115106)\begin{pmatrix} 11 & 5 \\ 10 & 6 \end{pmatrix}(111056)
