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Integral of atan(1/(x-1)) dx

Limits of integration:

from to
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The graph:

from to

Piecewise:

The solution

You have entered [src]
  1               
  /               
 |                
 |      /  1  \   
 |  atan|-----| dx
 |      \x - 1/   
 |                
/                 
0                 
$$\int\limits_{0}^{1} \operatorname{atan}{\left(\frac{1}{x - 1} \right)}\, dx$$
Integral(atan(1/(x - 1)), (x, 0, 1))
The answer (Indefinite) [src]
                           /       2    \      /   2    \                      
  /                     log|2 + --------|   log|--------|                      
 |                         |           2|      |       2|                      
 |     /  1  \             \    (x - 1) /      \(x - 1) /               /  1  \
 | atan|-----| dx = C + ----------------- - ------------- + (x - 1)*atan|-----|
 |     \x - 1/                  2                 2                     \x - 1/
 |                                                                             
/                                                                              
$$\int \operatorname{atan}{\left(\frac{1}{x - 1} \right)}\, dx = C + \left(x - 1\right) \operatorname{atan}{\left(\frac{1}{x - 1} \right)} + \frac{\log{\left(2 + \frac{2}{\left(x - 1\right)^{2}} \right)}}{2} - \frac{\log{\left(\frac{2}{\left(x - 1\right)^{2}} \right)}}{2}$$
The graph
The answer [src]
  log(2)   pi
- ------ - --
    2      4 
$$- \frac{\pi}{4} - \frac{\log{\left(2 \right)}}{2}$$
=
=
  log(2)   pi
- ------ - --
    2      4 
$$- \frac{\pi}{4} - \frac{\log{\left(2 \right)}}{2}$$
-log(2)/2 - pi/4
Numerical answer [src]
-1.13197175367742
-1.13197175367742

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