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# What does domain mean in math?

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Domain, in math, is defined as the set of all possible values that can be used as input values in a function. A simple mathematical function has a domain of all real numbers because there isn't a number that can be put into the function and not work.

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An example in which the domain is not all real numbers is when a function results in an undefined number. For the function y= 3/(x-1), all real numbers work except for 1. When 1 is entered into the function, the end result is 3 divided by 0, which is an undefined number.

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## Related Questions

• A:

According to Math Goodies, a conditional statement in math is defined as an if/then statement symbolized by p (arrow symbol) q, where "q" is a conclusion and "p" is a hypothesis. The arrow symbol denotes the logical connector in a conditional statement.

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In mathematics, a function is a relation between a set of inputs and a set of permissible outputs. Specifically, each input into a function has exactly one corresponding and correct output.

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In mathematics, a function's domain is all the possible inputs that the function can accept without breaking and the range is all the possible outputs. A real life example of this is using a simple calculator to add two numbers together. The function is the sum of "n" plus "m," the domain is all real numbers and the output is also all real numbers.