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An elementary matrix is a matrix that can be obtained from the identity matrix by:

The determinant of a triangular matrix (upper or lower) is the:

Which of the following conditions must be met for the addition of two matrices A and B to be defined?

The determinant of a square matrix A can be computed by expanding along any row or column using:

The cofactor C_ij of an entry a_ij in a matrix A is given by:

If A is a m×p matrix and B is a q×n matrix, under what condition is the matrix product AB defined?

In Kantian terms, cruelty to animals is wrong mainly because it ___:

Ethical use of logic demands habits like __:

Ross rejects act utilitarianism chiefly because ___:

Higher pleasures, for Mill, involve ___: