Characteristics of functions:
The given -value is known as the independent variable, because its value can be chosen freely. The calculated -value is known as the dependent variable, because its value depends on the -value.
The domain of a function is the set of all -values for which there exists at most one -value according to that function. The range is the set of all -values, which can be obtained using at least one -value.
An asymptote is a straight line, which the graph of a function will approach, but never touch.
Special functions and their properties:
Linear functions of the form .
Parabolic functions of the form .
Hyperbolic functions of the form .
Exponential functions of the form .
Trigonometric functions of the form