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Chapter 4
Matrices
Question | Answer |
---|---|
Dimensions | m x n |
Matrices | they are only equal if the the "n" in the first dimensions matches the "m" in the second dimension are the same number 3 x 2 2 x 3 |
Point matrix | 2 x 1 |
Scalar multiplication | the product of a scalar k and a matrix A is the matrix kA in which each element is k times the corresponding element in A. |
Find the product | 5 [ 7 4 -1] = [35 10 -5] [ 4 9 11] [20 45 55] |
Sequence | Put matrics into [A] *quit* multiply [B] |
Two matrics | ( [2 5] [3 1 -4]) [5] [2 0 1 ] [2] [1] |