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en.wikipedia.org/wiki/Function_(mathematics)

In mathematics, a function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output.

In programming, the concept of functions came from the idea of functions in mathematics. How they are similar: In math: -You take some input values -You give ...

www.mathsisfun.com/sets/function.html

But we are not going to look at specific functions ... ... instead we will look at the general idea of a function. Names. First, it is useful to give a function a name.

functions.wolfram.com

The world's largest collection of formulas and graphics about more than 300000 mathematical functions for the mathematics and science communities.

reference.wolfram.com/language/tutorial/SomeMathematicalFunctions.html

The Wolfram Language includes a very large collection of mathematical functions . "Mathematical Functions" gives the complete list. Here are a few of the ...

functions.wolfram.com/alphabeticalIndex.html

Search Site. Function Categories · Graphics Gallery · Notations · General Identities About This Site · Contribute · Email Comments · Elementary Functions.

reference.wolfram.com/language/guide/MathematicalFunctions.html

The Wolfram Language has the most extensive collection of mathematical functions ever assembled. Often relying on original results and algorithms developed ...

www.britannica.com/topic/function-mathematics

function: In mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the ...

www.thefreedictionary.com/mathematical+function

Noun, 1. mathematical function - (mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an ...

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