Module 7 : Applications of Integration - I
Lecture 21 : Relative rate of growth of functions [Section 21.1]
21.1
Relative Growth Rates of functions
 

In many applications, it becomes important to know how fast a function is increasing. This is often analysed by comparing it with other functions. Here are some examples:

21.1.1 Examples:
(i)

Consider the functions and . Both these functions increase as increases. However, increases at a rate much faster than . For example

 


               

where as

               .

 
(ii)

Let and . Then for

 

.

The comparison is even more striking for :

2