Find the Determinant of the Matrix $\left[ \begin{array} { r r } \frac { 1 } { 2 } & 1 \\- \frac { 1 } { 2 } & \frac { 3 } { 2 }\end{array} \right]$

question 12

Essay

Find the determinant of the matrix $\left[ \begin{array} { r r } \frac { 1 } { 2 } & 1 \\- \frac { 1 } { 2 } & \frac { 3 } { 2 }\end{array} \right]$
, if it exists

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