JIPAM

L'Hospital Type Rules for Monotonicity, with Applications  
 
  Authors: Iosif Pinelis,  
  Keywords: L'Hospital's Rule, Monotonicity, Information Inequalities  
  Date Received: 29/01/01  
  Date Accepted: 11/08/01  
  Subject Codes:

26A48,26D10,26D07,60E15,62B10,94A17.

  
  Editors: Feng Qi,  
 
  Abstract:

Let $ f;$ and $ g;$ be differentiable functions on an interval $ (a,b)$, and let the derivative $ g^{prime};$ be positive on $ (a,b)$. The main result of the paper implies that, if $ f(a+)=g(a+)=0;$ and $ dfrac{f^{prime}}{g^{prime}};$ is increasing on $ (a,b)$ , then $ dfrac{f}{g};$ is increasing on $ (a,b)$ .;


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