Matrix Operations.

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Presentation transcript:

Matrix Operations

What is a Matrix? MATRIX: A rectangular arrangement of numbers in rows and columns. The ORDER of a matrix is the number of the rows and columns. The ENTRIES are the numbers in the matrix. This order of this matrix is a 2 x 3. columns rows

What is the order?

Adding Two Matrices To add two matrices, they must have the same order. To add, you simply add corresponding entries.

= =

Subtracting Two Matrices To subtract two matrices, they must have the same order. You simply subtract corresponding entries.

= =

Multiplying a Matrix by a Scalar In matrix algebra, a real number is often called a SCALAR. To multiply a matrix by a scalar, you multiply each entry in the matrix by that scalar.

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