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Domain and Range

What is the solution for f(x)=x2-2

Posted in English, asked by Darlene, 6 years ago. 1677 hits.


Domain: All those values of x for which at-least one value of f(X) is defined is called domain.

Defined number = Real number

Undefined number= All those which are not real. i.e 1/0 , infinity.

so the domain for above function is set of all real numbers.

Range: in a function  f: A-> B

A= Domain , B= Co-domain.    and part of B which is used under f is called range. or you can say the possible output values called range.

so the range of above function is : [ -2, +infinity)


Ammara Hassan
Ammara Hassan - 6 years ago
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