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Sum of series (sqrt(i-1)+sqrti)/2nsqrtn



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The solution

You have entered [src]
  n                            
____                           
\   `                          
 \      _______     ___        
  \   \/ i - 1  + \/ i      ___
  /   -----------------*n*\/ n 
 /            2                
/___,                          
i = 1                          
$$\sum_{i=1}^{n} \sqrt{n} n \frac{\sqrt{i} + \sqrt{i - 1}}{2}$$
Sum((((sqrt(i - 1) + sqrt(i))/2)*n)*sqrt(n), (i, 1, n))
The answer [src]
  n                            
____                           
\   `                          
 \         /  ___     ________\
  \    3/2 |\/ i    \/ -1 + i |
  /   n   *|----- + ----------|
 /         \  2         2     /
/___,                          
i = 1                          
$$\sum_{i=1}^{n} n^{\frac{3}{2}} \left(\frac{\sqrt{i}}{2} + \frac{\sqrt{i - 1}}{2}\right)$$
Sum(n^(3/2)*(sqrt(i)/2 + sqrt(-1 + i)/2), (i, 1, n))

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