#792 – Matrix Multiplication, Part II – Multiplying a Row by a Column
April 5, 2013 1 Comment
When you multiply two matrixes together, you perform a series of operations where you multiply a row in the first matrix by a column in the second matrix. This multiplication results in a single term that will appear in the resulting matrix.
To multiply a row by a column, they must have the same number of elements. If you consider each of them as vectors, you multiply them by calculating the dot product of the two vectors.
A dot product is calculated by multiplying the corresponding elements in the two vectors and then adding the terms together.
For example, we might multiply a row containing the values a, b, c with a column containing the values x, y, z as follows:
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