Use a Graphing Calculator to Find the Inverse of the Matrix

question 309

Multiple Choice

Use a graphing calculator to find the inverse of the matrix. Give five decimal places, if necessary.
- $$A = \left[ \begin{array} { r r } \frac { 4 } { 3 } & 52 \\\sqrt { 21 } & 8.754\end{array} \right]$$

• A)
• \[\left[ \begin{array} { r r }
• - 0.03863 & 0.22946 \\
• 0.02022 & - 0.00588
• \end{array} \right]\]
• B)
• \[\left[ \begin{array} { r r }
• - 0.70513 & 0.41667 \\
• 0.36859 & - 0.10417
• \end{array} \right]\]
• C)
• \[\left[ \begin{array} { l l }
• 1 & 0 \\
• 0 & 1
• \end{array} \right]\]
• D)
• \[\left[ \begin{array} { c c }
• 0.75 & 0.01923 \\
• 0.21822 & 0.11423
• \end{array} \right]\]

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Definitions:

Double-ovulate

The occurrence of releasing two eggs during a single menstrual cycle, which can lead to fraternal twins if both eggs are fertilized.

X-linked

A term referring to genes or genetic conditions that are associated with the X chromosome, often affecting males more frequently or severely because they have only one X chromosome.

Dominant-recessive

describes a genetic pattern in which one allele overshadows the effects of another, recessive allele in determining a trait's appearance.

Additive Genes

Genes that each contribute to the characteristic—they “add up” rather than one being hidden (recessive). For example, skin color is additive: It shows the combined genes of both parents, rather than taking after one or the other.