7 September 1998 Vol. 3, No. 36
THE MATH FORUM INTERNET NEWS
Online Algebra  Brennan  Linear Algebra  Kazmierczak  New Dr. Math FAQs
ONLINE ALGEBRA  James Brennan
http://www.idbsu.edu/people/jbrennan/algebra/Algebra_notes.html
Start the school year with a general review of all the basics.
INTRODUCTION TO ALGEBRA features:
 Variables and algebraic expressions and simplifying
algebraic expressions
 Algebraic equations
solutions, the addition principle, the multiplication
principle, solving linear equations in one variable,
literal equations
 Word problems
problem solving strategies, words for operations,
common types of word problems
 Graphing and straight lines
rectangular coordinates, graphing functions, straight
lines
 Systems of linear equations
solutions of a system of equations, the addition
method, the substitution method
 Polynomials
definitions, addition and subtraction of polynomials,
multiplication of polynomials, products of binomials,
factoring
 Rational Expressions
definition, simplifying rational expressions
 Radicals
square roots, simplifying radical expressions,
rationalizing the denominator
 Quadratic Equations
definitions, solving by square roots, solving by
factoring, completing the square, the quadratic
equation
This site also offers:
 a Graphing Applet for exploring slope and intercepts
of straight lines
 a Prime Factorization Machine
 a Prime Number List
and, for prealgebra, THE NUMBERS OF ARITHMETIC, a review
of the real numbers and their properties, addition and
subtraction, multiplication and division, exponents, order
of operations, fractions, decimals, and percents.
\/\/\/\/\/\/\/\/\/\/
LINEAR ALGEBRA MATRIX CALCULATORS  Marcus Kazmierczak
http://www.mkaz.com/math/line_alg.html
 Matrix Calculator (Java Applet)
http://www.mkaz.com/math/matrix.html
A Java applet that lets you calculate the determinant,
adjoint, inverse, transpose, and more of an 'n x n'
matrix.
 Linear Algebra Calculator (JavaScript)
http://www.mkaz.com/math/js_calc.html
A matrix calculator with the ability to calculate the
determinant, adjoint, and inverse of a '3 x 3' matrix.
 Linear System of 3 Equations (JavaScript)
http://www.mkaz.com/math/js_lalg3.html
A calculator that can solve a linear system of
3 equations and 3 unknowns.
Kazmierczak also provides a short outline of the underlying
mathematics:
http://www.mkaz.com/math/math35.html
and his other math pages further explore Java and Java Script
applications:
http://www.mkaz.com/math/
\/\/\/\/\/\/\/\/\/\/
New from the Dr. Math FAQ:
LEARNING MULTIPLICATION FACTS
http://mathforum.org/dr.math/faq/faq.learn.multiply.html
Tips for parents, teachers, and students having
difficulty teaching or learning times tables.
LEARNING TO FACTOR
http://mathforum.org/dr.math/faq/faq.learn.factor.html
A sampling of answers from our archives on how to
factor both numbers and polynomials.
DIVIDING BY ZERO
http://mathforum.org/dr.math/faq/faq.divideby0.html
Why can't you divide by 0?
Why is 0/0 "indeterminate" and 1/0 "undefined"?
Why is dividing by zero "illegal"?
Answers to these and other frequently asked math questions
can be found in the Dr. Math FAQ:
http://mathforum.org/dr.math/faq/
\/\/\/\/\/\/\/\/\/\/
CHECK OUT OUR WEB SITE:
The Math Forum http://mathforum.org/
Ask Dr. Math http://mathforum.org/dr.math/
Problems of the Week http://mathforum.org/pow/
Internet Resources http://mathforum.org/~steve/
Join the Math Forum http://mathforum.org/join.forum.html
Send comments to the Math Forum Internet Newsletter editors
_o \o_ __ \ / __ o _ o/ \o/
__ __/ \__/o \o  o/ o/__/ /\ / 
\ \ / \ / \ /o\ / \ / \ /  / \ / \
