L`Hôpital's rule

Let f and g derivable functions in an open interval centered at x = a, if:

 

Examples A:

Examples B:

Examples C:

     Examples D:
    
 
 
 
Exercise: calculate these limits:
 
 
 
 
 
Solutions: a) 1; b) √e; c) -3/2; d) 1
 

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