Difference between revisions of "Variable"

 
(Definition: i is not usually used as a variable, p and q are)
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A '''variable''' does not have a set value.  Its value can change, and a '''variable''' is used to represent unknowns in equations.
 
A '''variable''' does not have a set value.  Its value can change, and a '''variable''' is used to represent unknowns in equations.
  
Any symbol may be used as a variable, but the most common variables are x, y, z, n, i, a, b, and c.
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Any symbol may be used as a variable, but the most common variables are x, y, z, n, a, b, c, p, and q.
  
 
== Examples ==
 
== Examples ==

Revision as of 20:10, 7 July 2006

Definition

A variable does not have a set value. Its value can change, and a variable is used to represent unknowns in equations.

Any symbol may be used as a variable, but the most common variables are x, y, z, n, a, b, c, p, and q.

Examples

What plus 7 is 10?

Write an equation that uses a variable to represent the part that is unknown.

$\displaystyle7+n=10$

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