August 2022
Intermediate to advanced
640 pages
15h 59m
English
Content preview from Algebra II All-in-One For Dummies
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Chapter 18
Making Moves with Matrices
IN THIS CHAPTER
Getting lined up with matrices
Operating on matrices
Singling out single rows for operations
Identifying the inverses of matrices
Employing matrices to solve systems of equations
A matrix is a rectangular array of numbers. It has the same number of elements in each of its rows, and each column shares the same number of elements. If you’ve seen the Matrix films, you may remember the lines and columns of green code scrolling down the characters’ computer screens. This matrix of codes represented the abstract “matrix” of the films. Putting numbers or elements in an orderly array allows you to organize information, access information quickly, do computations involving some of the entries in the matrix, and communicate your results efficiently.
The word matrix is singular — you have just one of them. When you have more than one matrix, you have matrices, the plural form. Bet you weren’t expecting an English (or Latin) lesson in this ...
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