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Lesson 1 Vocabulary

Lesson 1 Vocabulary. A matrix is a rectangular array of numbers. A matrix having m rows and n columns is said to be of order m x n. Element of a matrix- denoted a ij. A Matrix with only one row is called a row matrix. A matrix with only one column is called a column matrix.

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Lesson 1 Vocabulary

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  1. Lesson 1 Vocabulary

  2. A matrix is a rectangular array of numbers.

  3. A matrix having m rows and n columns is said to be of order m x n

  4. Element of a matrix- denoted aij

  5. A Matrix with only one row is called a row matrix.

  6. A matrix with only one column is called a column matrix.

  7. A square matrix has the same number of rows and columns.

  8. A Scalar, when working with matrices is a real number.

  9. The matrix kA = [kaij] is a scalar multiple of A.

  10. The m x n matrix O = [0] consisting entirely of zeros is the zero matrix.

  11. Matrix O is the additive identity for the set of all m x n matrices, because A + O = A

  12. A and B are additive inverses if A + B = [aij] + [-aij] = O

  13. Matrix Multiplication- When multiplying two matrices you multiply the entries of the rows of one matrix by the entries in the columns of the other, and add to get the new entry.

  14. The transpose of a matrix is formed by interchanging the rows and columns of that matrix.

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