Module 2 : Limits and Continuity of  Functions
Lecture 5 : Continuity  
5.2 .3  Theorem:
 
 Let . Let  be functions,both continuous at

 Then the following holds:

(i) are continuous at .

(ii)If is defined in a neighbourhood of and is continuous at .                     
   
   Proof:
 


 Follows from theorem 3.1.3

   
   
 
   
   
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