The answer to 14+(-2) is 12
        
             
        
        
        
To stretch or shrink the graph in the y direction, multiply or divide the output by a constant. 2f (x) is stretched in the y direction by a factor of 2, and f (x) is shrunk in the y direction by a factor of 2 (or stretched by a factor of ). Here are the graphs of y = f (x), y = 2f (x), and y = x.
y is f(x) btw.
 
        
        
        
Answer:
 a = 1 and b = 2
Step-by-step explanation: 
Using the Quotient Rule>
d/dx[(sin x)/(2+cos x) ] 
=   [(2 + cos x) * cosx -  sin x * - sin x)]  /  (2 + cos x)^2
= 2cos x + cos^2x + sin ^2 x) /  (2 + cos x)^2
But cos^2x + sin^2x = 1 so we have:
(1 +  2 cos x)  /   (2 + cos x)^2
- so a = 1 and b = 2.