Answer:
2√14
Step-by-step explanation:
√56
 
√2^2 x 14
√2^2 √14
2√14
 
        
             
        
        
        
Answer:
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Step-by-step explanation:
 
        
             
        
        
        
An alternating series 

 converges if 

 is monotonic and 

 as 

. Here 

.
Let 

. Then 

, which is positive for all 

, so 

 is monotonically increasing for 

. This would mean 

 must be a monotonically decreasing sequence over the same interval, and so must 

.
Because 

 is monotonically increasing, but will still always be positive, it follows that 

 as 

.
So, 

 converges.
 
        
             
        
        
        
Answer:
To find out the range, you check the minimum and maximum of the graph, and then check the y-component of these minimum and maximum.
You would get the minimum(-6, -6), and maximum(3, 4), get the y-component of these two points, you got the range: -6 to 4
Hope this helps!
:)