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In mathematical functions, the letter "x" is used as a variable, meaning it's used in place of an unknown value or values. The letter "x" is commonly used to represent a variable, ...

What Is a Mathematical Function?
Ever since civilization began advancing beyond the most simple needs, mathematics has advanced to meet the needs of humankind. Whether it's figuring out how to properly build a bridge, predict taxes in the coming years, or understanding the mechanics of... More »
Difficulty: Easy

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.

What is a Function - Math is Fun

We will see many ways to think about functions, but there are always three main .... Functions have been used in mathematics for a very long time, and lots of ...
In addition to the fixed values that can be accessed from the Math class there are also a whole range of functions that are available. You will probably only use the sin, cos, tan, acos, asin, atan, atan2, log, exp, pow, ... More »

The Wolfram Functions Site

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

NIST Digital Library of Mathematical Functions

Result of a project to provide a modern revision of Abramowitz and Stegun's " Handbook of Mathematical Functions". The site includes definitions, properties, and ...

What is a function? | Function introduction | Khan Academy

It is very important in higher math. In fact, the pre-calculus course I took way back when was actually called "Elementary *Functions*." They are another vital ...

The Definition of a Function - Pauls Online Math Notes

However, before we actually give the definition of a function let's see if we ... Some relations are very special and are used at almost all levels of mathematics.

Mathematical function - The Free Dictionary function

Noun, 1. mathematical function - (mathematics) a mathematical relation such that each element of a given mathematical function - (mathematics) a mathematical ...

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A: Multiply function is basically used in SQL.after that if we want to add,subtract,divide,module then we can also do this. Read More »
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