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Integral de (3^x+5^(2x))/7^x dx

Límites de integración:

interior superior
v

Gráfico:

interior superior

Definida a trozos:

Solución

Ha introducido [src]
  1             
  /             
 |              
 |   x    2*x   
 |  3  + 5      
 |  --------- dx
 |       x      
 |      7       
 |              
/               
0               
013x+52x7xdx\int\limits_{0}^{1} \frac{3^{x} + 5^{2 x}}{7^{x}}\, dx
Integral((3^x + 5^(2*x))/7^x, (x, 0, 1))
Solución detallada
  1. Vuelva a escribir el integrando:

    3x+52x7x=3x7x+52x7x\frac{3^{x} + 5^{2 x}}{7^{x}} = 3^{x} 7^{- x} + 5^{2 x} 7^{- x}

  2. Integramos término a término:

    1. No puedo encontrar los pasos en la búsqueda de esta integral.

      Pero la integral

      3x7xlog(7)+7xlog(3)\frac{3^{x}}{- 7^{x} \log{\left(7 \right)} + 7^{x} \log{\left(3 \right)}}

    1. No puedo encontrar los pasos en la búsqueda de esta integral.

      Pero la integral

      52x7xlog(7)+27xlog(5)\frac{5^{2 x}}{- 7^{x} \log{\left(7 \right)} + 2 \cdot 7^{x} \log{\left(5 \right)}}

    El resultado es: 3x7xlog(7)+7xlog(3)+52x7xlog(7)+27xlog(5)\frac{3^{x}}{- 7^{x} \log{\left(7 \right)} + 7^{x} \log{\left(3 \right)}} + \frac{5^{2 x}}{- 7^{x} \log{\left(7 \right)} + 2 \cdot 7^{x} \log{\left(5 \right)}}

  3. Ahora simplificar:

    175x49xlog(257)+21x49xlog(37)\frac{175^{x} 49^{- x}}{\log{\left(\frac{25}{7} \right)}} + \frac{21^{x} 49^{- x}}{\log{\left(\frac{3}{7} \right)}}

  4. Añadimos la constante de integración:

    175x49xlog(257)+21x49xlog(37)+constant\frac{175^{x} 49^{- x}}{\log{\left(\frac{25}{7} \right)}} + \frac{21^{x} 49^{- x}}{\log{\left(\frac{3}{7} \right)}}+ \mathrm{constant}


Respuesta:

175x49xlog(257)+21x49xlog(37)+constant\frac{175^{x} 49^{- x}}{\log{\left(\frac{25}{7} \right)}} + \frac{21^{x} 49^{- x}}{\log{\left(\frac{3}{7} \right)}}+ \mathrm{constant}

Respuesta (Indefinida) [src]
  /                                                                    
 |                                                                     
 |  x    2*x                     x                        2*x          
 | 3  + 5                       3                        5             
 | --------- dx = C + --------------------- + -------------------------
 |      x              x           x             x             x       
 |     7              7 *log(3) - 7 *log(7)   - 7 *log(7) + 2*7 *log(5)
 |                                                                     
/                                                                      
3x+52x7xdx=3x7xlog(7)+7xlog(3)+52x7xlog(7)+27xlog(5)+C\int \frac{3^{x} + 5^{2 x}}{7^{x}}\, dx = \frac{3^{x}}{- 7^{x} \log{\left(7 \right)} + 7^{x} \log{\left(3 \right)}} + \frac{5^{2 x}}{- 7^{x} \log{\left(7 \right)} + 2 \cdot 7^{x} \log{\left(5 \right)}} + C
Gráfica
0.001.000.100.200.300.400.500.600.700.800.905-5
Respuesta [src]
                             log(3)                                                         28*log(7)                                                         2*log(5)                                                      2*log(7)                                                         6*log(5)                                                           25*log(3)                            
- ----------------------------------------------------------- - ----------------------------------------------------------------- - ----------------------------------------------------------- + ----------------------------------------------------------- + ----------------------------------------------------------------- + -----------------------------------------------------------------
     2                                                               2                                                                 2                                                             2                                                               2                                                                   2                                                           
  log (7) - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)   7*log (7) - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)   log (7) - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)   log (7) - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)   7*log (7) - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)   7*log (7) - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)
25log(3)14log(5)log(7)7log(3)log(7)+14log(3)log(5)+7log(7)2+2log(7)2log(5)log(7)log(3)log(7)+2log(3)log(5)+log(7)2+6log(5)14log(5)log(7)7log(3)log(7)+14log(3)log(5)+7log(7)2log(3)2log(5)log(7)log(3)log(7)+2log(3)log(5)+log(7)22log(5)2log(5)log(7)log(3)log(7)+2log(3)log(5)+log(7)228log(7)14log(5)log(7)7log(3)log(7)+14log(3)log(5)+7log(7)2\frac{25 \log{\left(3 \right)}}{- 14 \log{\left(5 \right)} \log{\left(7 \right)} - 7 \log{\left(3 \right)} \log{\left(7 \right)} + 14 \log{\left(3 \right)} \log{\left(5 \right)} + 7 \log{\left(7 \right)}^{2}} + \frac{2 \log{\left(7 \right)}}{- 2 \log{\left(5 \right)} \log{\left(7 \right)} - \log{\left(3 \right)} \log{\left(7 \right)} + 2 \log{\left(3 \right)} \log{\left(5 \right)} + \log{\left(7 \right)}^{2}} + \frac{6 \log{\left(5 \right)}}{- 14 \log{\left(5 \right)} \log{\left(7 \right)} - 7 \log{\left(3 \right)} \log{\left(7 \right)} + 14 \log{\left(3 \right)} \log{\left(5 \right)} + 7 \log{\left(7 \right)}^{2}} - \frac{\log{\left(3 \right)}}{- 2 \log{\left(5 \right)} \log{\left(7 \right)} - \log{\left(3 \right)} \log{\left(7 \right)} + 2 \log{\left(3 \right)} \log{\left(5 \right)} + \log{\left(7 \right)}^{2}} - \frac{2 \log{\left(5 \right)}}{- 2 \log{\left(5 \right)} \log{\left(7 \right)} - \log{\left(3 \right)} \log{\left(7 \right)} + 2 \log{\left(3 \right)} \log{\left(5 \right)} + \log{\left(7 \right)}^{2}} - \frac{28 \log{\left(7 \right)}}{- 14 \log{\left(5 \right)} \log{\left(7 \right)} - 7 \log{\left(3 \right)} \log{\left(7 \right)} + 14 \log{\left(3 \right)} \log{\left(5 \right)} + 7 \log{\left(7 \right)}^{2}}
=
=
                             log(3)                                                         28*log(7)                                                         2*log(5)                                                      2*log(7)                                                         6*log(5)                                                           25*log(3)                            
- ----------------------------------------------------------- - ----------------------------------------------------------------- - ----------------------------------------------------------- + ----------------------------------------------------------- + ----------------------------------------------------------------- + -----------------------------------------------------------------
     2                                                               2                                                                 2                                                             2                                                               2                                                                   2                                                           
  log (7) - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)   7*log (7) - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)   log (7) - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)   log (7) - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)   7*log (7) - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)   7*log (7) - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)
25log(3)14log(5)log(7)7log(3)log(7)+14log(3)log(5)+7log(7)2+2log(7)2log(5)log(7)log(3)log(7)+2log(3)log(5)+log(7)2+6log(5)14log(5)log(7)7log(3)log(7)+14log(3)log(5)+7log(7)2log(3)2log(5)log(7)log(3)log(7)+2log(3)log(5)+log(7)22log(5)2log(5)log(7)log(3)log(7)+2log(3)log(5)+log(7)228log(7)14log(5)log(7)7log(3)log(7)+14log(3)log(5)+7log(7)2\frac{25 \log{\left(3 \right)}}{- 14 \log{\left(5 \right)} \log{\left(7 \right)} - 7 \log{\left(3 \right)} \log{\left(7 \right)} + 14 \log{\left(3 \right)} \log{\left(5 \right)} + 7 \log{\left(7 \right)}^{2}} + \frac{2 \log{\left(7 \right)}}{- 2 \log{\left(5 \right)} \log{\left(7 \right)} - \log{\left(3 \right)} \log{\left(7 \right)} + 2 \log{\left(3 \right)} \log{\left(5 \right)} + \log{\left(7 \right)}^{2}} + \frac{6 \log{\left(5 \right)}}{- 14 \log{\left(5 \right)} \log{\left(7 \right)} - 7 \log{\left(3 \right)} \log{\left(7 \right)} + 14 \log{\left(3 \right)} \log{\left(5 \right)} + 7 \log{\left(7 \right)}^{2}} - \frac{\log{\left(3 \right)}}{- 2 \log{\left(5 \right)} \log{\left(7 \right)} - \log{\left(3 \right)} \log{\left(7 \right)} + 2 \log{\left(3 \right)} \log{\left(5 \right)} + \log{\left(7 \right)}^{2}} - \frac{2 \log{\left(5 \right)}}{- 2 \log{\left(5 \right)} \log{\left(7 \right)} - \log{\left(3 \right)} \log{\left(7 \right)} + 2 \log{\left(3 \right)} \log{\left(5 \right)} + \log{\left(7 \right)}^{2}} - \frac{28 \log{\left(7 \right)}}{- 14 \log{\left(5 \right)} \log{\left(7 \right)} - 7 \log{\left(3 \right)} \log{\left(7 \right)} + 14 \log{\left(3 \right)} \log{\left(5 \right)} + 7 \log{\left(7 \right)}^{2}}
-log(3)/(log(7)^2 - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)) - 28*log(7)/(7*log(7)^2 - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)) - 2*log(5)/(log(7)^2 - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)) + 2*log(7)/(log(7)^2 - log(3)*log(7) - 2*log(5)*log(7) + 2*log(3)*log(5)) + 6*log(5)/(7*log(7)^2 - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5)) + 25*log(3)/(7*log(7)^2 - 14*log(5)*log(7) - 7*log(3)*log(7) + 14*log(3)*log(5))
Respuesta numérica [src]
2.69444263572942
2.69444263572942

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