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Resolución de integrales/ sinnx/ (x-2)/ (x-2)*sinnx

Integral de (x-2)*sinnx dx

Límites de integración:

interior superior
v

Gráfico:

interior superior

Definida a trozos:

Solución

Ha introducido [src] 
 pi                    
  /                    
 |                     
 |  (x - 2)*sin(n*x) dx
 |                     
/                      
0
$$\int\limits_{0}^{\pi} \left(x - 2\right) \sin{\left(n x \right)}\, dx$$ 
Integral((x - 2)*sin(n*x), (x, 0, pi))
Respuesta (Indefinida) [src] 
                             //            0              for n = 0\                                                          
                             ||                                    |                                                          
  /                          || //sin(n*x)            \            |     //    0       for n = 0\     //    0       for n = 0\
 |                           || ||--------  for n != 0|            |     ||                     |     ||                     |
 | (x - 2)*sin(n*x) dx = C - |<-|<   n                |            | - 2*|<-cos(n*x)            | + x*|<-cos(n*x)            |
 |                           || ||                    |            |     ||----------  otherwise|     ||----------  otherwise|
/                            || \\   x      otherwise /            |     \\    n                /     \\    n                /
                             ||-------------------------  otherwise|                                                          
                             \\            n                       /
$$\int \left(x - 2\right) \sin{\left(n x \right)}\, dx = C + x \left(\begin{cases} 0 & \text{for}\: n = 0 \\- \frac{\cos{\left(n x \right)}}{n} & \text{otherwise} \end{cases}\right) - \begin{cases} 0 & \text{for}\: n = 0 \\- \frac{\begin{cases} \frac{\sin{\left(n x \right)}}{n} & \text{for}\: n \neq 0 \\x & \text{otherwise} \end{cases}}{n} & \text{otherwise} \end{cases} - 2 \left(\begin{cases} 0 & \text{for}\: n = 0 \\- \frac{\cos{\left(n x \right)}}{n} & \text{otherwise} \end{cases}\right)$$
Simplificar
Respuesta [src] 
/  2   sin(pi*n)   2*cos(pi*n)   pi*cos(pi*n)                                  
|- - + --------- + ----------- - ------------  for And(n > -oo, n < oo, n != 0)
|  n        2           n             n                                        
<          n                                                                   
|                                                                              
|                     0                                   otherwise            
\
$$\begin{cases} - \frac{\pi \cos{\left(\pi n \right)}}{n} + \frac{2 \cos{\left(\pi n \right)}}{n} - \frac{2}{n} + \frac{\sin{\left(\pi n \right)}}{n^{2}} & \text{for}\: n > -\infty \wedge n < \infty \wedge n \neq 0 \\0 & \text{otherwise} \end{cases}$$ 
=
= 
/  2   sin(pi*n)   2*cos(pi*n)   pi*cos(pi*n)                                  
|- - + --------- + ----------- - ------------  for And(n > -oo, n < oo, n != 0)
|  n        2           n             n                                        
<          n                                                                   
|                                                                              
|                     0                                   otherwise            
\
$$\begin{cases} - \frac{\pi \cos{\left(\pi n \right)}}{n} + \frac{2 \cos{\left(\pi n \right)}}{n} - \frac{2}{n} + \frac{\sin{\left(\pi n \right)}}{n^{2}} & \text{for}\: n > -\infty \wedge n < \infty \wedge n \neq 0 \\0 & \text{otherwise} \end{cases}$$ 
Piecewise((-2/n + sin(pi*n)/n^2 + 2*cos(pi*n)/n - pi*cos(pi*n)/n, (n > -oo)∧(n < oo)∧(Ne(n, 0))), (0, True))

    Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.

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