Multiplying Matrices (Jump to: Lecture | Video )

Matrix

An array of numbers is called a matrix.

Figure 1.

Matrices can only be multiplied if the number of columns in the first matrix is equal to the number of the rows in the second matrix.

Figure 2.

Below, we are multiplying two 2 x 2 matrices:

Figure 3.

Now, we have our final result:

Figure 4.

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