Integral de (x^9-3*x^7+2*x^6)/7^x dx
Solución
Solución detallada
Vuelva a escribir el integrando:
2 x 6 + ( x 9 − 3 x 7 ) 7 x = 7 − x x 9 − 3 ⋅ 7 − x x 7 + 2 ⋅ 7 − x x 6 \frac{2 x^{6} + \left(x^{9} - 3 x^{7}\right)}{7^{x}} = 7^{- x} x^{9} - 3 \cdot 7^{- x} x^{7} + 2 \cdot 7^{- x} x^{6} 7 x 2 x 6 + ( x 9 − 3 x 7 ) = 7 − x x 9 − 3 ⋅ 7 − x x 7 + 2 ⋅ 7 − x x 6
Integramos término a término:
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
7 − x ( − x 9 log ( 7 ) 9 − 9 x 8 log ( 7 ) 8 − 72 x 7 log ( 7 ) 7 − 504 x 6 log ( 7 ) 6 − 3024 x 5 log ( 7 ) 5 − 15120 x 4 log ( 7 ) 4 − 60480 x 3 log ( 7 ) 3 − 181440 x 2 log ( 7 ) 2 − 362880 x log ( 7 ) − 362880 ) log ( 7 ) 10 \frac{7^{- x} \left(- x^{9} \log{\left(7 \right)}^{9} - 9 x^{8} \log{\left(7 \right)}^{8} - 72 x^{7} \log{\left(7 \right)}^{7} - 504 x^{6} \log{\left(7 \right)}^{6} - 3024 x^{5} \log{\left(7 \right)}^{5} - 15120 x^{4} \log{\left(7 \right)}^{4} - 60480 x^{3} \log{\left(7 \right)}^{3} - 181440 x^{2} \log{\left(7 \right)}^{2} - 362880 x \log{\left(7 \right)} - 362880\right)}{\log{\left(7 \right)}^{10}} l o g ( 7 ) 10 7 − x ( − x 9 l o g ( 7 ) 9 − 9 x 8 l o g ( 7 ) 8 − 72 x 7 l o g ( 7 ) 7 − 504 x 6 l o g ( 7 ) 6 − 3024 x 5 l o g ( 7 ) 5 − 15120 x 4 l o g ( 7 ) 4 − 60480 x 3 l o g ( 7 ) 3 − 181440 x 2 l o g ( 7 ) 2 − 362880 x l o g ( 7 ) − 362880 )
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫ ( − 3 ⋅ 7 − x x 7 ) d x = − 3 ∫ 7 − x x 7 d x \int \left(- 3 \cdot 7^{- x} x^{7}\right)\, dx = - 3 \int 7^{- x} x^{7}\, dx ∫ ( − 3 ⋅ 7 − x x 7 ) d x = − 3 ∫ 7 − x x 7 d x
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
7 − x ( − x 7 log ( 7 ) 7 − 7 x 6 log ( 7 ) 6 − 42 x 5 log ( 7 ) 5 − 210 x 4 log ( 7 ) 4 − 840 x 3 log ( 7 ) 3 − 2520 x 2 log ( 7 ) 2 − 5040 x log ( 7 ) − 5040 ) log ( 7 ) 8 \frac{7^{- x} \left(- x^{7} \log{\left(7 \right)}^{7} - 7 x^{6} \log{\left(7 \right)}^{6} - 42 x^{5} \log{\left(7 \right)}^{5} - 210 x^{4} \log{\left(7 \right)}^{4} - 840 x^{3} \log{\left(7 \right)}^{3} - 2520 x^{2} \log{\left(7 \right)}^{2} - 5040 x \log{\left(7 \right)} - 5040\right)}{\log{\left(7 \right)}^{8}} l o g ( 7 ) 8 7 − x ( − x 7 l o g ( 7 ) 7 − 7 x 6 l o g ( 7 ) 6 − 42 x 5 l o g ( 7 ) 5 − 210 x 4 l o g ( 7 ) 4 − 840 x 3 l o g ( 7 ) 3 − 2520 x 2 l o g ( 7 ) 2 − 5040 x l o g ( 7 ) − 5040 )
Por lo tanto, el resultado es: − 3 ⋅ 7 − x ( − x 7 log ( 7 ) 7 − 7 x 6 log ( 7 ) 6 − 42 x 5 log ( 7 ) 5 − 210 x 4 log ( 7 ) 4 − 840 x 3 log ( 7 ) 3 − 2520 x 2 log ( 7 ) 2 − 5040 x log ( 7 ) − 5040 ) log ( 7 ) 8 - \frac{3 \cdot 7^{- x} \left(- x^{7} \log{\left(7 \right)}^{7} - 7 x^{6} \log{\left(7 \right)}^{6} - 42 x^{5} \log{\left(7 \right)}^{5} - 210 x^{4} \log{\left(7 \right)}^{4} - 840 x^{3} \log{\left(7 \right)}^{3} - 2520 x^{2} \log{\left(7 \right)}^{2} - 5040 x \log{\left(7 \right)} - 5040\right)}{\log{\left(7 \right)}^{8}} − l o g ( 7 ) 8 3 ⋅ 7 − x ( − x 7 l o g ( 7 ) 7 − 7 x 6 l o g ( 7 ) 6 − 42 x 5 l o g ( 7 ) 5 − 210 x 4 l o g ( 7 ) 4 − 840 x 3 l o g ( 7 ) 3 − 2520 x 2 l o g ( 7 ) 2 − 5040 x l o g ( 7 ) − 5040 )
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫ 2 ⋅ 7 − x x 6 d x = 2 ∫ 7 − x x 6 d x \int 2 \cdot 7^{- x} x^{6}\, dx = 2 \int 7^{- x} x^{6}\, dx ∫ 2 ⋅ 7 − x x 6 d x = 2 ∫ 7 − x x 6 d x
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
7 − x ( − x 6 log ( 7 ) 6 − 6 x 5 log ( 7 ) 5 − 30 x 4 log ( 7 ) 4 − 120 x 3 log ( 7 ) 3 − 360 x 2 log ( 7 ) 2 − 720 x log ( 7 ) − 720 ) log ( 7 ) 7 \frac{7^{- x} \left(- x^{6} \log{\left(7 \right)}^{6} - 6 x^{5} \log{\left(7 \right)}^{5} - 30 x^{4} \log{\left(7 \right)}^{4} - 120 x^{3} \log{\left(7 \right)}^{3} - 360 x^{2} \log{\left(7 \right)}^{2} - 720 x \log{\left(7 \right)} - 720\right)}{\log{\left(7 \right)}^{7}} l o g ( 7 ) 7 7 − x ( − x 6 l o g ( 7 ) 6 − 6 x 5 l o g ( 7 ) 5 − 30 x 4 l o g ( 7 ) 4 − 120 x 3 l o g ( 7 ) 3 − 360 x 2 l o g ( 7 ) 2 − 720 x l o g ( 7 ) − 720 )
Por lo tanto, el resultado es: 2 ⋅ 7 − x ( − x 6 log ( 7 ) 6 − 6 x 5 log ( 7 ) 5 − 30 x 4 log ( 7 ) 4 − 120 x 3 log ( 7 ) 3 − 360 x 2 log ( 7 ) 2 − 720 x log ( 7 ) − 720 ) log ( 7 ) 7 \frac{2 \cdot 7^{- x} \left(- x^{6} \log{\left(7 \right)}^{6} - 6 x^{5} \log{\left(7 \right)}^{5} - 30 x^{4} \log{\left(7 \right)}^{4} - 120 x^{3} \log{\left(7 \right)}^{3} - 360 x^{2} \log{\left(7 \right)}^{2} - 720 x \log{\left(7 \right)} - 720\right)}{\log{\left(7 \right)}^{7}} l o g ( 7 ) 7 2 ⋅ 7 − x ( − x 6 l o g ( 7 ) 6 − 6 x 5 l o g ( 7 ) 5 − 30 x 4 l o g ( 7 ) 4 − 120 x 3 l o g ( 7 ) 3 − 360 x 2 l o g ( 7 ) 2 − 720 x l o g ( 7 ) − 720 )
El resultado es: 2 ⋅ 7 − x ( − x 6 log ( 7 ) 6 − 6 x 5 log ( 7 ) 5 − 30 x 4 log ( 7 ) 4 − 120 x 3 log ( 7 ) 3 − 360 x 2 log ( 7 ) 2 − 720 x log ( 7 ) − 720 ) log ( 7 ) 7 − 3 ⋅ 7 − x ( − x 7 log ( 7 ) 7 − 7 x 6 log ( 7 ) 6 − 42 x 5 log ( 7 ) 5 − 210 x 4 log ( 7 ) 4 − 840 x 3 log ( 7 ) 3 − 2520 x 2 log ( 7 ) 2 − 5040 x log ( 7 ) − 5040 ) log ( 7 ) 8 + 7 − x ( − x 9 log ( 7 ) 9 − 9 x 8 log ( 7 ) 8 − 72 x 7 log ( 7 ) 7 − 504 x 6 log ( 7 ) 6 − 3024 x 5 log ( 7 ) 5 − 15120 x 4 log ( 7 ) 4 − 60480 x 3 log ( 7 ) 3 − 181440 x 2 log ( 7 ) 2 − 362880 x log ( 7 ) − 362880 ) log ( 7 ) 10 \frac{2 \cdot 7^{- x} \left(- x^{6} \log{\left(7 \right)}^{6} - 6 x^{5} \log{\left(7 \right)}^{5} - 30 x^{4} \log{\left(7 \right)}^{4} - 120 x^{3} \log{\left(7 \right)}^{3} - 360 x^{2} \log{\left(7 \right)}^{2} - 720 x \log{\left(7 \right)} - 720\right)}{\log{\left(7 \right)}^{7}} - \frac{3 \cdot 7^{- x} \left(- x^{7} \log{\left(7 \right)}^{7} - 7 x^{6} \log{\left(7 \right)}^{6} - 42 x^{5} \log{\left(7 \right)}^{5} - 210 x^{4} \log{\left(7 \right)}^{4} - 840 x^{3} \log{\left(7 \right)}^{3} - 2520 x^{2} \log{\left(7 \right)}^{2} - 5040 x \log{\left(7 \right)} - 5040\right)}{\log{\left(7 \right)}^{8}} + \frac{7^{- x} \left(- x^{9} \log{\left(7 \right)}^{9} - 9 x^{8} \log{\left(7 \right)}^{8} - 72 x^{7} \log{\left(7 \right)}^{7} - 504 x^{6} \log{\left(7 \right)}^{6} - 3024 x^{5} \log{\left(7 \right)}^{5} - 15120 x^{4} \log{\left(7 \right)}^{4} - 60480 x^{3} \log{\left(7 \right)}^{3} - 181440 x^{2} \log{\left(7 \right)}^{2} - 362880 x \log{\left(7 \right)} - 362880\right)}{\log{\left(7 \right)}^{10}} l o g ( 7 ) 7 2 ⋅ 7 − x ( − x 6 l o g ( 7 ) 6 − 6 x 5 l o g ( 7 ) 5 − 30 x 4 l o g ( 7 ) 4 − 120 x 3 l o g ( 7 ) 3 − 360 x 2 l o g ( 7 ) 2 − 720 x l o g ( 7 ) − 720 ) − l o g ( 7 ) 8 3 ⋅ 7 − x ( − x 7 l o g ( 7 ) 7 − 7 x 6 l o g ( 7 ) 6 − 42 x 5 l o g ( 7 ) 5 − 210 x 4 l o g ( 7 ) 4 − 840 x 3 l o g ( 7 ) 3 − 2520 x 2 l o g ( 7 ) 2 − 5040 x l o g ( 7 ) − 5040 ) + l o g ( 7 ) 10 7 − x ( − x 9 l o g ( 7 ) 9 − 9 x 8 l o g ( 7 ) 8 − 72 x 7 l o g ( 7 ) 7 − 504 x 6 l o g ( 7 ) 6 − 3024 x 5 l o g ( 7 ) 5 − 15120 x 4 l o g ( 7 ) 4 − 60480 x 3 l o g ( 7 ) 3 − 181440 x 2 l o g ( 7 ) 2 − 362880 x l o g ( 7 ) − 362880 )
Ahora simplificar:
Añadimos la constante de integración:
Respuesta:
Respuesta (Indefinida)
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| 9 7 6 -x / 9 9 2 2 3 3 4 4 5 5 6 6 7 7 8 8 \ -x / 7 7 2 2 3 3 4 4 5 5 6 6 \ -x / 6 6 2 2 3 3 4 4 5 5 \
| x - 3*x + 2*x 7 *\-362880 - x *log (7) - 362880*x*log(7) - 181440*x *log (7) - 60480*x *log (7) - 15120*x *log (7) - 3024*x *log (7) - 504*x *log (7) - 72*x *log (7) - 9*x *log (7)/ 3*7 *\-5040 - x *log (7) - 5040*x*log(7) - 2520*x *log (7) - 840*x *log (7) - 210*x *log (7) - 42*x *log (7) - 7*x *log (7)/ 2*7 *\-720 - x *log (7) - 720*x*log(7) - 360*x *log (7) - 120*x *log (7) - 30*x *log (7) - 6*x *log (7)/
| ---------------- dx = C + ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ - ----------------------------------------------------------------------------------------------------------------------------- + ---------------------------------------------------------------------------------------------------------
| x 10 8 7
| 7 log (7) log (7) log (7)
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∫ 2 x 6 + ( x 9 − 3 x 7 ) 7 x d x = C + 2 ⋅ 7 − x ( − x 6 log ( 7 ) 6 − 6 x 5 log ( 7 ) 5 − 30 x 4 log ( 7 ) 4 − 120 x 3 log ( 7 ) 3 − 360 x 2 log ( 7 ) 2 − 720 x log ( 7 ) − 720 ) log ( 7 ) 7 − 3 ⋅ 7 − x ( − x 7 log ( 7 ) 7 − 7 x 6 log ( 7 ) 6 − 42 x 5 log ( 7 ) 5 − 210 x 4 log ( 7 ) 4 − 840 x 3 log ( 7 ) 3 − 2520 x 2 log ( 7 ) 2 − 5040 x log ( 7 ) − 5040 ) log ( 7 ) 8 + 7 − x ( − x 9 log ( 7 ) 9 − 9 x 8 log ( 7 ) 8 − 72 x 7 log ( 7 ) 7 − 504 x 6 log ( 7 ) 6 − 3024 x 5 log ( 7 ) 5 − 15120 x 4 log ( 7 ) 4 − 60480 x 3 log ( 7 ) 3 − 181440 x 2 log ( 7 ) 2 − 362880 x log ( 7 ) − 362880 ) log ( 7 ) 10 \int \frac{2 x^{6} + \left(x^{9} - 3 x^{7}\right)}{7^{x}}\, dx = C + \frac{2 \cdot 7^{- x} \left(- x^{6} \log{\left(7 \right)}^{6} - 6 x^{5} \log{\left(7 \right)}^{5} - 30 x^{4} \log{\left(7 \right)}^{4} - 120 x^{3} \log{\left(7 \right)}^{3} - 360 x^{2} \log{\left(7 \right)}^{2} - 720 x \log{\left(7 \right)} - 720\right)}{\log{\left(7 \right)}^{7}} - \frac{3 \cdot 7^{- x} \left(- x^{7} \log{\left(7 \right)}^{7} - 7 x^{6} \log{\left(7 \right)}^{6} - 42 x^{5} \log{\left(7 \right)}^{5} - 210 x^{4} \log{\left(7 \right)}^{4} - 840 x^{3} \log{\left(7 \right)}^{3} - 2520 x^{2} \log{\left(7 \right)}^{2} - 5040 x \log{\left(7 \right)} - 5040\right)}{\log{\left(7 \right)}^{8}} + \frac{7^{- x} \left(- x^{9} \log{\left(7 \right)}^{9} - 9 x^{8} \log{\left(7 \right)}^{8} - 72 x^{7} \log{\left(7 \right)}^{7} - 504 x^{6} \log{\left(7 \right)}^{6} - 3024 x^{5} \log{\left(7 \right)}^{5} - 15120 x^{4} \log{\left(7 \right)}^{4} - 60480 x^{3} \log{\left(7 \right)}^{3} - 181440 x^{2} \log{\left(7 \right)}^{2} - 362880 x \log{\left(7 \right)} - 362880\right)}{\log{\left(7 \right)}^{10}} ∫ 7 x 2 x 6 + ( x 9 − 3 x 7 ) d x = C + log ( 7 ) 7 2 ⋅ 7 − x ( − x 6 log ( 7 ) 6 − 6 x 5 log ( 7 ) 5 − 30 x 4 log ( 7 ) 4 − 120 x 3 log ( 7 ) 3 − 360 x 2 log ( 7 ) 2 − 720 x log ( 7 ) − 720 ) − log ( 7 ) 8 3 ⋅ 7 − x ( − x 7 log ( 7 ) 7 − 7 x 6 log ( 7 ) 6 − 42 x 5 log ( 7 ) 5 − 210 x 4 log ( 7 ) 4 − 840 x 3 log ( 7 ) 3 − 2520 x 2 log ( 7 ) 2 − 5040 x log ( 7 ) − 5040 ) + log ( 7 ) 10 7 − x ( − x 9 log ( 7 ) 9 − 9 x 8 log ( 7 ) 8 − 72 x 7 log ( 7 ) 7 − 504 x 6 log ( 7 ) 6 − 3024 x 5 log ( 7 ) 5 − 15120 x 4 log ( 7 ) 4 − 60480 x 3 log ( 7 ) 3 − 181440 x 2 log ( 7 ) 2 − 362880 x log ( 7 ) − 362880 )
Gráfica
0.00 1.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 -500 500
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.