Use the Inverse Formula $A ^ { - 1 } = \frac { 1 } { a d - b c } \left[ \begin{array} { c c } d & - b \\- c & a\end{array} \right]$

question 15

Multiple Choice

Use the inverse formula $A ^ { - 1 } = \frac { 1 } { a d - b c } \left[ \begin{array} { c c } d & - b \\- c & a\end{array} \right]$ to find the inverse of the 2×2 matrix (if it exists) .
$\left[ \begin{array} { c c } 1 & - 2 \\- 3 & 2\end{array} \right]$

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Definitions:

Superior Oblique

A cranial muscle that originates from the sphenoid bone and inserts onto the outer surface of the eye, contributing to downward and outward movements of the eye.

Superior Rectus

A muscle in the eye that controls upward eye movement and is one of the six extraocular muscles.

Inferior Rectus

A muscle in the eye that is responsible for downward eye movement.

Coracobrachialis

A muscle in the shoulder that assists in flexing and adducting the arm at the shoulder joint.