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Suma de la serie (x-2)^(n+1)/(3^n*(n+2))



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Solución

Ha introducido [src]
  oo              
____              
\   `             
 \           n + 1
  \   (x - 2)     
   )  ------------
  /     n         
 /     3 *(n + 2) 
/___,             
n = 1             
$$\sum_{n=1}^{\infty} \frac{\left(x - 2\right)^{n + 1}}{3^{n} \left(n + 2\right)}$$
Sum((x - 2)^(n + 1)/((3^n*(n + 2))), (n, 1, oo))
Respuesta [src]
    //          /       x          /5   x\\                         \     //          /       x          /5   x\\                         \
    ||          |  -2 - -     3*log|- - -||                         |     ||          |  -2 - -     3*log|- - -||                         |
    ||/  2   x\ |       2          \3   3/|                         |     ||/  2   x\ |       2          \3   3/|                         |
    |||- - + -|*|---------- - ------------|  for And(x >= -1, x < 5)|     |||- - + -|*|---------- - ------------|  for And(x >= -1, x < 5)|
    ||\  9   9/ |         2             3 |                         |     ||\  9   9/ |         2             3 |                         |
    ||          |/  2   x\     /  2   x\  |                         |     ||          |/  2   x\     /  2   x\  |                         |
    ||          ||- - + -|     |- - + -|  |                         |     ||          ||- - + -|     |- - + -|  |                         |
    ||          \\  3   3/     \  3   3/  /                         |     ||          \\  3   3/     \  3   3/  /                         |
    ||                                                              |     ||                                                              |
- 2*|<           oo                                                 | + x*|<           oo                                                 |
    ||         ____                                                 |     ||         ____                                                 |
    ||         \   `                                                |     ||         \   `                                                |
    ||          \     -n         n                                  |     ||          \     -n         n                                  |
    ||           \   3  *(-2 + x)                                   |     ||           \   3  *(-2 + x)                                   |
    ||           /   -------------                  otherwise       |     ||           /   -------------                  otherwise       |
    ||          /        2 + n                                      |     ||          /        2 + n                                      |
    ||         /___,                                                |     ||         /___,                                                |
    ||         n = 1                                                |     ||         n = 1                                                |
    \\                                                              /     \\                                                              /
$$x \left(\begin{cases} \left(\frac{x}{9} - \frac{2}{9}\right) \left(\frac{- \frac{x}{2} - 2}{\left(\frac{x}{3} - \frac{2}{3}\right)^{2}} - \frac{3 \log{\left(\frac{5}{3} - \frac{x}{3} \right)}}{\left(\frac{x}{3} - \frac{2}{3}\right)^{3}}\right) & \text{for}\: x \geq -1 \wedge x < 5 \\\sum_{n=1}^{\infty} \frac{3^{- n} \left(x - 2\right)^{n}}{n + 2} & \text{otherwise} \end{cases}\right) - 2 \left(\begin{cases} \left(\frac{x}{9} - \frac{2}{9}\right) \left(\frac{- \frac{x}{2} - 2}{\left(\frac{x}{3} - \frac{2}{3}\right)^{2}} - \frac{3 \log{\left(\frac{5}{3} - \frac{x}{3} \right)}}{\left(\frac{x}{3} - \frac{2}{3}\right)^{3}}\right) & \text{for}\: x \geq -1 \wedge x < 5 \\\sum_{n=1}^{\infty} \frac{3^{- n} \left(x - 2\right)^{n}}{n + 2} & \text{otherwise} \end{cases}\right)$$
-2*Piecewise(((-2/9 + x/9)*((-2 - x/2)/(-2/3 + x/3)^2 - 3*log(5/3 - x/3)/(-2/3 + x/3)^3), (x >= -1)∧(x < 5)), (Sum(3^(-n)*(-2 + x)^n/(2 + n), (n, 1, oo)), True)) + x*Piecewise(((-2/9 + x/9)*((-2 - x/2)/(-2/3 + x/3)^2 - 3*log(5/3 - x/3)/(-2/3 + x/3)^3), (x >= -1)∧(x < 5)), (Sum(3^(-n)*(-2 + x)^n/(2 + n), (n, 1, oo)), True))

    Ejemplos de hallazgo de la suma de la serie