Sturm sequences   
 
    1.  
    0.  
  - 1.  
    1.  
 
 Number of eigen values strickly greater than 2 :    
 
    0.  
 
 Sturm sequences   
 
    1.  
    1.  
    0.  
  - 1.  
 
 Number of eigen values strickly greater than 1 :    
 
    1.  
 
 Sturm sequences   
 
    1.     
    0.5    
  - 0.75   
  - 0.125  
 
 Number of eigen values strickly greater than 1.5 :    
 
    2.  
 
 Eigen value lying between [1.5,2] ie with an error of 0.25  
      is :                                                   
 
    1.75