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A variable (pronounced /ˈvɛərɪəbl/) is an attribute of a physical or an abstract system which may change its value while it is under observation. Examples include the height of a child, the temperature across a state, or the input to a func...
http://answers.yahoo.com/question/index?qid=20080930034...
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An equation is a statement that two numbers or expressions are equal. Equations are useful for relating variables and numbers. Many word problems can easily be written down as equations with a little practice. Many simple rules exist for simplifying equations.
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www.mathleague.com/help/algebra/algebra.htm
www.mathleague.com/help/algebra/algebra.htm
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Variable - Wikipedia, the free encyclopedia
Variable may refer to: • Variable (mathematics), a symbol that stands for a value that may vary • Variable (programming), a symbolic name associated with a value and whose associated value may be cha...
en.wikipedia.org/wiki/Variable
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This is where algebra is useful because variables describe changing situations. Hence functions which are described by equations might now be considered. Using computer packages or calculators, gradient functions can be found for some well known functions.
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hsc.csu.edu.au/maths/teacher_resources/2384/prof_readin...
hsc.csu.edu.au/maths/teacher_resources/2384/prof_reading/journals/white/white.htm
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There is a much broader range of topics than would be covered in any elementary setting, but pulling out the ones that are (variables, polynomials, integers, etc.) can be used by students for review of concepts or for teachers to help plan effective lessons. ... Useful Elementary Algebra Links...
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www.mste.uiuc.edu/courses/ci332fa02/folders/cohort2/jni...
www.mste.uiuc.edu/courses/ci332fa02/folders/cohort2/jnicolos/algebralinks.htm
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Why are variables useful in algebra? I feel the use of variables make it difficult for many people to understand because it is subconcious that math is numbers, not letters.... Thank you! By using a variable, one may make use of a formula which is good for hundreds of situations where only the variable changes.
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www.jiskha.com/display.cgi?id=1174357045
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My questions are: why are variables useful in algebra? Also, what makes the use of variables difficult to understand? Variables are things that change or vary. Depending on which variables concern you, you might want to be able to predict just how they vary, and what factors influence this variation.
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www.jiskha.com/display.cgi?id=1167210572
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Questions: Why do you think variables are useful in algebra? What makes the use of variables difficult to understand?. ... Variables in algebra are discussed. The response received a rating of "5/5" from the student who originally posted the question.
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www.brainmass.com/homework-help/math/algebra/146197
www.brainmass.com/homework-help/math/algebra/146197
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For two binary variables (taking values 0 and 1) there are 16 possible functions. ... These operations are like ordinary algebraic operations in that they are commutative, associative, and distributive. There is a group of useful theorems of Boolean algebra which help in developing the logic for a given operation.
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hyperphysics.phy-astr.gsu.edu/hbase/electronic/diglog.h...
hyperphysics.phy-astr.gsu.edu/hbase/electronic/diglog.html
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