## Answers

to find domain just check whether a function is defined ,i.e What can go into a function is called the Domain

**and what comes from a function is range **

**for example consider Y=X^2**

**here the value of x is domain and after putting the values in the equation the so called result is called range ,i.e. the value f Y is range**

### This Is a Certified Answer

**, you have to see**

*find domain***when you try one or two real numbers, -ve and +ve and also integers +ve and -ve and zero, you will know which values the function accepts as input...**

*which values can be used in the expression for x.*Then you observe which values are the results of f() .

*The set of these become CODOMAIN or range.*Practice a few functions with some trial values like 1, 2, -1, -2, 0, 0.5, -0.5 etc. Then you gain good experience to be able to find domain and range easily