Either the Dimensions of Two Matrices or the Matrices Themselves $\mathrm { A }$

question 83

Multiple Choice

Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and
the product BA. If either is not defined, say so.
- $\mathrm { A }$ is $2 \times 1$ ; B is $1 \times 1$ .

• A) \(\mathrm { AB }\) is \(2 \times 2\); BA is \(1 \times 1\).
• B) \(\mathrm { AB }\) is not defined; \(\mathrm { BA }\) is \(1 \times 2\).
• C) \(\mathrm { AB }\) is \(2 \times 1\); \(\mathrm { BA }\) is not defined.
• D) \(\mathrm { AB }\) is \(1 \times 2\); \(\mathrm { BA }\) is \(1 \times 1\).

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Availability Of Credit

Refers to the ease with which individuals or businesses can obtain loans or other lines of credit from financial institutions or lenders.

Total Value

The complete worth of a product, asset, or service, taking into account all components of its economic value.

Fiscal Policy

Government policies related to revenue generation (taxation) and expenditure to influence the economy.

Monetary Policy

The process by which a country's central bank controls the supply of money, often targeting inflation or interest rates to ensure economic stability.