Module 2 : Limits and Continuity of  Functions
Lecture 5 : Continuity  [ Section 5.2 : Continuity ]
 
Historical Comments
  The idea of limit existed implicitly in the ‘method of exhaustion' – a method used by the Greek mathematicians (500-200 B.C.) such as Eudoxes and Archimedes. It was Isaac Newton who first talked explicitly about limits in his work on Calculus. The concept of limit was finally defined by Cauchy (1789-1857). Cauchy worked as a civil engineer in Napoleon's army. Despite his busy schedule, he helped local authorities in conducting school examinations and continued doing his research. He produced about 500 research papers in diverse branches of mathematics.
   
   
   
   
   
   
   
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