# Algebra: Functions, Domain, NOT graphing

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 Algebra: Functions, Domain, NOT graphing Solvers Lessons Answers archive Quiz In Depth

Typical function

Note that this module is NOT about general plotting of graphs! It discusses functions, their domains, and inverse functions.

Lessons: First read the introduction into functions by longjonsilver. A function is an operation on numbers of some set (domain) that gives (calculates) one number for every number from the domain. For example, function 3x is defined for all numbers and its result is a number multiplied by 3. The notation is y=f(x). x is called the argument of the function, and y is the value of the function. The inverse function of f(x), is a different function of y that finds x that gives f(x) = y. Also check out other lessons on functions and domains.

Solvers:There are some function solvers that let you plot a function, plot function and SHOW DOMAIN, plot function and its INVERSE, or find minimum and maximum of a quadratic function.

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