Unit 02: Functions and Limits

Unit 02: Functions and Limits We know that function is a rule or correspondence between two non-empty sets X and Y in such a way that, each element of X corresponds to one and only one element of Y. Here X is called the domain of the function and the set of corresponding elements of Y is called the range of the function.

Graph of a function is useful to identify the domain and range of a function. The domain of the function consists of all the input values shown on the x-axis. The range is the set of possible output values shown on the y-axis.