Multiplicative Inverses of Matrices and Matrix Equations
1 Find the Multiplicative

question 130

Multiple Choice

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

• A) \(B = A ^ { - 1 }\)
• B) \(B \neq A ^ { - 1 }\)

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Definitions:

Marginal Revenue

The augmented income obtained by selling one more unit of a good or service.

Marginal Cost

The increase in total cost that arises from producing one additional unit of output.

Competitive Market

A market structure characterized by a large number of buyers and sellers, such that no single participant can significantly influence price.

Marginal Cost

The increase in cost that arises from producing an additional unit of output.