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## what is function in general mathematics

### Function | Definition Types Examples & Facts | Britannica

Function in mathematics an expression rule or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable). Functions are ubiquitous in mathematics and are essential for formulating physical relationships in the sciences.

### Functions | Algebra 1 | Math | Khan Academy

www.khanacademy.org › math › algebraFunctions | Algebra 1 | Math | Khan Academy www.khanacademy.org › math › algebra CachedEvaluating functions. What is a function? Worked example Evaluating functions from equation. Worked example Evaluating functions from graph. Inputs and outputs of a function. Worked example matching an input to a functions output (equation) Worked example matching an input to a functions output (graph) Functions and equations. Equations vs. functions. Obtaining a function from an equation. Practice. Function rules from equations Get 3 of 4 questions to level up! Interpreting function notation. Function notation word problem bank. Function notation word problem beach. Practice. Function notation word problems Get 3 of 4 questions to level up!

### What is a Function? Definition Types and Notation – BYJUS

A function in maths is a special relationship among the inputs (i.e. the domain) and their outputs (known as the codomain) where each input has exactly one output and the output can be traced back to its input. Types of Functions in Maths An example of a simple function is f (x) = x 2.

### What is a Function – Math is Fun

A function relates an input to an output. It is like a machine that has an input and an output. And the output is related somehow to the input. Input Relationship Output We will see many ways to think about functions but there are always three main parts The input The relationship The output Example Multiply by 2 is a very simple function.

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