Multiplicative Inverses of Matrices and Matrix Equations
1 Find the Multiplicative

question 138

Multiple Choice

Multiplicative Inverses of Matrices and Matrix Equations
1 Find the Multiplicative Inverse of a Square Matrix
- $A = \left[ \begin{array} { l l } - 4 & 6 \\ - 5 & 0 \end{array} \right]$

• A)\(\left[ \begin{array} { c } 0 - \frac { 1 } { 5 } \\ \frac { 1 } { 6 } - \frac { 2 } { 15 } \end{array} \right]\)
• B)\(\left[ \begin{array} { c r } 0 & \frac { 1 } { 5 } \\ - \frac { 1 } { 6 } & - \frac { 2 } { 15 } \end{array} \right]\)
• C) \(\left[ \begin{array} { c c } \frac { 1 } { 6 } & - \frac { 2 } { 15 } \\ 0 & - \frac { 1 } { 5 } \end{array} \right]\)

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Definitions:

MTBF

Mean Time Between Failures, a measure of reliability for a system, indicating the average time between failures.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values from their mean.

Preventive Maintenance

Scheduled maintenance activities conducted on equipment before faults occur in order to prevent breakdowns and minimize downtime.

Redundancy

The use of components in parallel to raise reliability.