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What is Understanding n x m Matrices about?

1. A matrix is a rectangular array of numbers. An n x m matrix has n rows and m columns. Matrix entries are denoted aij as the entry in the ith row and jth column. 2. A vector is a special type of matrix. A column vector is an n x 1 matrix and a row vector is a 1 x m matrix. A square matrix is an n x n matrix. 3. The transpose of a matrix is obtained by reflecting the matrix over its diagonal. For an n x m matrix A, its transpose AT is an m x n matrix where the ijth entry of AT is the jith entry of A.

Author

Kani Mozhi

Language

EN