## Most recent change of Equation

Edit made on November 24, 2008 by ColinWright at 15:10:32

~~Deleted text in red~~
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Inserted text in green

WW

HEADERS_END

An equation is any statement with an equals sign in it.

Equations come in a variety of flavours. A ~~simplified~~ simple (and simplistic) classification of equations could include:

~~EQUATIONS~~ COLUMN_START^ [[[

!! Equations

Mathematical statement which is true for a limited number of values of its variable.

* EQN:3x+2=-7 is true for one value of the variable x

* EQN:sin(x)=0.5 is true for an infinite number but not all of values of x

]]] COLUMN_SPLIT^ [[[

~~IDENTITIES~~ !! Identities

Statements which are true for all values of the variable.

~~e.g.~~ * EQN:3(x+2)=3x+6

* EQN:2^n=\sum_{i=0}^{i=n}{n\choose~i}

~~PROPOSITIONS~~

]]] COLUMN_SPLIT^ [[[

!! Propositions

Statements which are either true or false

* 2 + 3 = 5

* 1 + 1 = 3

]]] COLUMN_END

However, this classification does not include differential equations, integral equations, ~~functions etc.~~ functions, /etc./