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Dimensions of a Matrix

Dimensions of a Matrix

The number of rows and columns of a matrix, written in the form rows×columns. The matrix below has 2 rows and 3 columns, so its dimensions are 2×3. This is read aloud, "two by three."

Note: One way to remember that Rows come first and Columns come second is by thinking of RC Cola®.

 

2×3 matrix with rows [2, 0, -5] and [-1, 3, 6], illustrating 2 rows and 3 columns.

 

 

See also

Square matrix