A Variable Can Be Anything
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This Demonstration introduces the concept of a variable. Variables stand for unknown numerical values and are usually expressed by a letter. Use the slider to replace your variable with a specific value.
Contributed by: Jesse Nochella (March 2011)
Open content licensed under CC BY-NC-SA
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"A Variable Can Be Anything"
http://demonstrations.wolfram.com/AVariableCanBeAnything/
Wolfram Demonstrations Project
Published: March 7 2011