Find the derivative of f(x) = 5 divided by x at x = -1. (1 point)
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
   -5
Step-by-step explanation:
The power rule can be used.
   f(x) = 5x^-1
   f'(x) = 5(-1)x^(-1-1)
   f'(x) = -5x^-2
Then ...
   f'(-1) = -5(-1)^-2
   f'(-1) = -5
_____
The attached graph shows the value of the derivative at x=-1, along with a tangent line having that slope at the point (-1, f(-1)).
 
                                
             
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