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Integral of 1/(x^2-6x+100) dx

Limits of integration:

from to
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
 oo                  
  /                  
 |                   
 |        1          
 |  -------------- dx
 |   2               
 |  x  - 6*x + 100   
 |                   
/                    
2                    
$$\int\limits_{2}^{\infty} \frac{1}{\left(x^{2} - 6 x\right) + 100}\, dx$$
Integral(1/(x^2 - 6*x + 100), (x, 2, oo))
Detail solution
We have the integral:
  /                 
 |                  
 |       1          
 | -------------- dx
 |  2               
 | x  - 6*x + 100   
 |                  
/                   
Rewrite the integrand
      1                          1                
-------------- = ---------------------------------
 2                  /                       2    \
x  - 6*x + 100      |/   ____          ____\     |
                    ||-\/ 91       3*\/ 91 |     |
                 91*||--------*x + --------|  + 1|
                    \\   91           91   /     /
or
  /                   
 |                    
 |       1            
 | -------------- dx  
 |  2                =
 | x  - 6*x + 100     
 |                    
/                     
  
  /                               
 |                                
 |              1                 
 | ---------------------------- dx
 |                        2       
 | /   ____          ____\        
 | |-\/ 91       3*\/ 91 |        
 | |--------*x + --------|  + 1   
 | \   91           91   /        
 |                                
/                                 
----------------------------------
                91                
In the integral
  /                               
 |                                
 |              1                 
 | ---------------------------- dx
 |                        2       
 | /   ____          ____\        
 | |-\/ 91       3*\/ 91 |        
 | |--------*x + --------|  + 1   
 | \   91           91   /        
 |                                
/                                 
----------------------------------
                91                
do replacement
        ____       ____
    3*\/ 91    x*\/ 91 
v = -------- - --------
       91         91   
then
the integral =
  /                   
 |                    
 |   1                
 | ------ dv          
 |      2             
 | 1 + v              
 |                    
/              atan(v)
------------ = -------
     91           91  
do backward replacement
  /                                                                    
 |                                                                     
 |              1                                                      
 | ---------------------------- dx                                     
 |                        2                                            
 | /   ____          ____\                                             
 | |-\/ 91       3*\/ 91 |                                             
 | |--------*x + --------|  + 1                 /      ____       ____\
 | \   91           91   /             ____     |  3*\/ 91    x*\/ 91 |
 |                                   \/ 91 *atan|- -------- + --------|
/                                               \     91         91   /
---------------------------------- = ----------------------------------
                91                                   91                
Solution is:
               /      ____       ____\
      ____     |  3*\/ 91    x*\/ 91 |
    \/ 91 *atan|- -------- + --------|
               \     91         91   /
C + ----------------------------------
                    91                
The answer (Indefinite) [src]
                                      /  ____         \
  /                          ____     |\/ 91 *(-3 + x)|
 |                         \/ 91 *atan|---------------|
 |       1                            \       91      /
 | -------------- dx = C + ----------------------------
 |  2                                   91             
 | x  - 6*x + 100                                      
 |                                                     
/                                                      
$$\int \frac{1}{\left(x^{2} - 6 x\right) + 100}\, dx = C + \frac{\sqrt{91} \operatorname{atan}{\left(\frac{\sqrt{91} \left(x - 3\right)}{91} \right)}}{91}$$
The graph
The answer [src]
           /  ____\            
  ____     |\/ 91 |            
\/ 91 *atan|------|        ____
           \  91  /   pi*\/ 91 
------------------- + ---------
         91              182   
$$\frac{\sqrt{91} \operatorname{atan}{\left(\frac{\sqrt{91}}{91} \right)}}{91} + \frac{\sqrt{91} \pi}{182}$$
=
=
           /  ____\            
  ____     |\/ 91 |            
\/ 91 *atan|------|        ____
           \  91  /   pi*\/ 91 
------------------- + ---------
         91              182   
$$\frac{\sqrt{91} \operatorname{atan}{\left(\frac{\sqrt{91}}{91} \right)}}{91} + \frac{\sqrt{91} \pi}{182}$$
sqrt(91)*atan(sqrt(91)/91)/91 + pi*sqrt(91)/182

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