Decide Whether or Not the Matrices Are Inverses of Each

question 166

Multiple Choice

Decide whether or not the matrices are inverses of each other.
- $$\left[ \begin{array} { r r r } 1 & - 1 & 2 \\- 3 & - 2 & 4 \\- 1 & 1 & 1\end{array} \right] \text { and } \left[ \begin{array} { r r r } 2 & - 1 & 0 \\- 1 & 1 & - 2 \\1 & 0 & - 1\end{array} \right]$$

• A) \(Y e s\)
• B) No

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Definitions:

Forearm Level

Relating to or situated in the part of the arm between the elbow and the wrist.

Trunk Muscle

Refers to the muscles of the central part of the body, encompassing both the abdominal and the back muscles.

Subclavius

A small muscle located under the clavicle, playing a role in shoulder movements and stability.

Coccygeus

A small muscle located in the pelvic area, part of the pelvic floor, playing a role in supporting the coccyx (tailbone) and controlling movements of the pelvic area.