MAT 171 PRECALCULUS ALGEBRA
Internet Links
Students can get and use interactive help coinciding with the odd problems throughout the book at
http://www.interactmath.com . Choose “Bittinger: Precalculus: Graphs & Models, 3e ENHANCED” as the textbook.
Download and install the necessary components to use the online textbook exercises. You can select specific
chapter, section, and odd problem number to work on. You can also get help on solving the problems.
The following web site includes information and study lessons on topics covered in your textbook. This web site
covers College Algebra, Intermediate Algebra, Beginning Algebra, GRE Math Study Session, and THEA and
ACCUPLACER Math Study Session. Various links to this web site are listed below under some of the chapter
sections. This site is from the West Texas A&M University Virtual Math Lab
http://www.wtamu.edu/academic/anns/mps/math/mathlab/ .
The following links give instructions for using the TI83/84 graphing calculator.
http://www.prenhall.com/esm/app/graphing/ti83/
http://www.richland.edu/james/ti82/
http://www4.ncsu.edu/unity/lockers/users/f/felder/public/kenny/papers/ti.html
http://hotmath.com/graphing_calculators/ti84_movie_index.html
CHAPTER 8 – SYSTEMS OF EQUATIONS AND MATRICES
8.1 Systems of Equations in Two Variables
Explanation and solving examples by different methods:
http://www.sosmath.com/soe/SE2001/SE2001.html
http://www.wtamu.edu/academic/anns/mps/math/mathlab/int_algebra/int_alg_tut19_systwo.htm
http://www.castleton.edu/Math/finite/procedure_for_solving_a_system_o.htm
8.2 Systems of Equations in Three Variables
Explanation and solving examples by different methods:
http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut50_systhree.htm
http://fp.academic.venturacollege.edu/rbrunner/3e_3s.htm
http://www.mathwarehouse.com/algebra/planes/systems/three-variable-equations.php
http://jcoffman.com/Algebra2/ch3_6.htm
8.3 Matrices and Systems of Equations
A. Matrices and Row-Equivalent Operations
http://www.richland.edu/james/lecture/m116/matrices/matrices.html
B. Gaussian Elimination with Matrices
http://www.sosmath.com/matrix/elemop/elemop.html
http://ticc.mines.edu/csm/wiki/images/7/7c/Gaussian_elimination.pdf
C. Gauss-Jordan Elimination
http://simonwillison.net/2002/Oct/1/gaussJordanElimination/
http://aspire.cs.uah.edu/textbook/gauss.html
http://www.saintmarys.edu/~psmith/338act2.html
Additional Information:
Cramer’s Rule
http://www.purplemath.com/modules/cramers.htm
http://www.analyzemath.com/Tutorial-System-Equations/cramers_rule.html
http://www.mathcentre.ac.uk/staff.php/packs/firstaidkit/resources/54