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Find the Inverse Matrix of A A=[3202940468060030]A = \left[ \begin{array} { r r r r } 3 & - 2 & 0 & 2 \\9 & - 4 & 0 & 4 \\6 & - 8 & 0 & 6 \\0 & 0 & - 3 & 0\end{array} \right]

Question 4

Multiple Choice

Find the inverse matrix of A.
- A=[3202940468060030]A = \left[ \begin{array} { r r r r } 3 & - 2 & 0 & 2 \\9 & - 4 & 0 & 4 \\6 & - 8 & 0 & 6 \\0 & 0 & - 3 & 0\end{array} \right]


A)
[13120121914014161801600130]\left[ \begin{array} { c c c c } \frac { 1 } { 3 } & - \frac { 1 } { 2 } & 0 & \frac { 1 } { 2 } \\\frac { 1 } { 9 } & - \frac { 1 } { 4 } & 0 & \frac { 1 } { 4 } \\\frac { 1 } { 6 } & - \frac { 1 } { 8 } & 0 & \frac { 1 } { 6 } \\0 & 0 & - \frac { 1 } { 3 } & 0\end{array} \right]
B)
[23520413120101201200130]\left[ \begin{array} { r r r r } - \frac { 2 } { 3 } & \frac { 5 } { 2 } & 0 & 4 \\\frac { 1 } { 3 } & - \frac { 1 } { 2 } & 0 & - 1 \\0 & - \frac { 1 } { 2 } & 0 & - \frac { 1 } { 2 } \\0 & 0 & - \frac { 1 } { 3 } & 0\end{array} \right]


C)
[23520413121101201202130]\left[ \begin{array} { r r r r } - \frac { 2 } { 3 } & \frac { 5 } { 2 } & 0 & 4 \\\frac { 1 } { 3 } & - \frac { 1 } { 2 } & - 1 & - 1 \\0 & - \frac { 1 } { 2 } & 0 & - \frac { 1 } { 2 } \\0 & 2 & - \frac { 1 } { 3 } & 0\end{array} \right]
D)
[23130052121200001341120]\left[\begin{array}{rrrr}-\frac{2}{3} & \frac{1}{3} & 0 & 0 \\\frac{5}{2} & -\frac{1}{2} & -\frac{1}{2} & 0 \\0 & 0 & 0 & -\frac{1}{3} \\4 & -1 & -\frac{1}{2} & 0\end{array}\right]

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