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How to use it?
Integral of d{x}:
Integral of 1-7*x^2
Integral of (x+1)dx
Integral of (x^2+1)/((x^3+3x+1)^5)
Integral of dx/(e^x-1)
Identical expressions
(arctg(one /x)+ one)/(x+ two)
(arctg(1 divide by x) plus 1) divide by (x plus 2)
(arctg(one divide by x) plus one) divide by (x plus two)
arctg1/x+1/x+2
(arctg(1 divide by x)+1) divide by (x+2)
(arctg(1/x)+1)/(x+2)dx
Similar expressions
(arctg(1/x)+1)/(x-2)
(arctg(1/x)-1)/(x+2)

Solving integrals/ (arctg(1/x)+1)/(x+2)

Integral of (arctg(1/x)+1)/(x+2) dx

The solution

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 oo               
  /               
 |                
 |      /1\       
 |  atan|-| + 1   
 |      \x/       
 |  ----------- dx
 |     x + 2      
 |                
/                 
1

$$\int\limits_{1}^{\infty} \frac{\operatorname{atan}{\left(\frac{1}{x} \right)} + 1}{x + 2}\, dx$$

Integral((atan(1/x) + 1)/(x + 2), (x, 1, oo))

Use the examples entering the upper and lower limits of integration.