An equation is any statement with an equals sign in it.
Equations come in a variety of flavours. A simple (and simplistic) classification of equations could include:
Mathematical statement which is true for a limited number of values of its variable.
- $3x+2=-7$ is true for one value of the variable x
- $sin(x)=0.5$ is true for an infinite number but not all of values of x
Statements which are true for all values of the variable.
Statements which are either true or false
However, this classification does not include differential equations, integral equations, functions, etc.
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