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Sum of series arctgx/x



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The solution

You have entered [src]
  1          
 ___         
 \  `        
  \   acot(x)
   )  -------
  /      x   
 /__,        
n = 0        
$$\sum_{n=0}^{1} \frac{\operatorname{acot}{\left(x \right)}}{x}$$
Sum(acot(x)/x, (n, 0, 1))
The answer [src]
2*acot(x)
---------
    x    
$$\frac{2 \operatorname{acot}{\left(x \right)}}{x}$$
2*acot(x)/x

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