Chapter 4But What About a Matrix?
A matrix is a rectangular arrangement of numbers, symbols, or functions organized in rows and columns. In various contexts, a matrix may denote a mathematical object or an attribute of such an object. A key feature of these elements is their order or size, defined by the number of rows and columns. Matrices are commonly denoted by capital letters, and can be represented using the following notation:
In this representation, m is the number of rows and n is the number of columns. An example of a 3 × 3 matrix is:
If we wish to generalise a representation for all matrices, we can rewrite the one above in a ...
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