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

Límites de integración:

interior superior
v

Gráfico:

interior superior

Definida a trozos:

Solución

Ha introducido [src]
 oo                  
  /                  
 |                   
 |        / 5    \   
 |   2    |x  + 3|   
 |  x *log|------| dx
 |        | 5    |   
 |        \x  + 2/   
 |                   
/                    
1                    
1x2log(x5+3x5+2)dx\int\limits_{1}^{\infty} x^{2} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}\, dx
Integral(x^2*log((x^5 + 3)/(x^5 + 2)), (x, 1, oo))
Solución detallada
  1. Hay varias maneras de calcular esta integral.

    Método #1

    1. Vuelva a escribir el integrando:

      x2log(x5+3x5+2)=x2log(x5x5+2+3x5+2)x^{2} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)} = x^{2} \log{\left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2} \right)}

    2. Usamos la integración por partes:

      udv=uvvdu\int \operatorname{u} \operatorname{dv} = \operatorname{u}\operatorname{v} - \int \operatorname{v} \operatorname{du}

      que u(x)=log(x5x5+2+3x5+2)u{\left(x \right)} = \log{\left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2} \right)} y que dv(x)=x2\operatorname{dv}{\left(x \right)} = x^{2}.

      Entonces du(x)=5x9(x5+2)2+5x4x5+215x4(x5+2)2x5x5+2+3x5+2\operatorname{du}{\left(x \right)} = \frac{- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}}{\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}}.

      Para buscar v(x)v{\left(x \right)}:

      1. Integral xnx^{n} es xn+1n+1\frac{x^{n + 1}}{n + 1} when n1n \neq -1:

        x2dx=x33\int x^{2}\, dx = \frac{x^{3}}{3}

      Ahora resolvemos podintegral.

    3. La integral del producto de una función por una constante es la constante por la integral de esta función:

      x3(5x9(x5+2)2+5x4x5+215x4(x5+2)2)3(x5x5+2+3x5+2)dx=x3(5x9(x5+2)2+5x4x5+215x4(x5+2)2)x5x5+2+3x5+2dx3\int \frac{x^{3} \left(- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}\right)}{3 \left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}\right)}\, dx = \frac{\int \frac{x^{3} \left(- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}\right)}{\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}}\, dx}{3}

      1. Vuelva a escribir el integrando:

        x3(5x9(x5+2)2+5x4x5+215x4(x5+2)2)x5x5+2+3x5+2=15x2x5+3+10x2x5+2\frac{x^{3} \left(- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}\right)}{\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}} = - \frac{15 x^{2}}{x^{5} + 3} + \frac{10 x^{2}}{x^{5} + 2}

      2. Integramos término a término:

        1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          (15x2x5+3)dx=15x2x5+3dx\int \left(- \frac{15 x^{2}}{x^{5} + 3}\right)\, dx = - 15 \int \frac{x^{2}}{x^{5} + 3}\, dx

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

            Pero la integral

            RootSum(28125t51,(ttlog(75t2+x)))\operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)}

          Por lo tanto, el resultado es: 15RootSum(28125t51,(ttlog(75t2+x)))- 15 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)}

        1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          10x2x5+2dx=10x2x5+2dx\int \frac{10 x^{2}}{x^{5} + 2}\, dx = 10 \int \frac{x^{2}}{x^{5} + 2}\, dx

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

            Pero la integral

            RootSum(12500t51,(ttlog(50t2+x)))\operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

          Por lo tanto, el resultado es: 10RootSum(12500t51,(ttlog(50t2+x)))10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

        El resultado es: 15RootSum(28125t51,(ttlog(75t2+x)))+10RootSum(12500t51,(ttlog(50t2+x)))- 15 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} + 10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

      Por lo tanto, el resultado es: 5RootSum(28125t51,(ttlog(75t2+x)))+10RootSum(12500t51,(ttlog(50t2+x)))3- 5 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} + \frac{10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}}{3}

    Método #2

    1. Usamos la integración por partes:

      udv=uvvdu\int \operatorname{u} \operatorname{dv} = \operatorname{u}\operatorname{v} - \int \operatorname{v} \operatorname{du}

      que u(x)=log(x5+3x5+2)u{\left(x \right)} = \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)} y que dv(x)=x2\operatorname{dv}{\left(x \right)} = x^{2}.

      Entonces du(x)=(x5+2)(5x4x5+25x4(x5+3)(x5+2)2)x5+3\operatorname{du}{\left(x \right)} = \frac{\left(x^{5} + 2\right) \left(\frac{5 x^{4}}{x^{5} + 2} - \frac{5 x^{4} \left(x^{5} + 3\right)}{\left(x^{5} + 2\right)^{2}}\right)}{x^{5} + 3}.

      Para buscar v(x)v{\left(x \right)}:

      1. Integral xnx^{n} es xn+1n+1\frac{x^{n + 1}}{n + 1} when n1n \neq -1:

        x2dx=x33\int x^{2}\, dx = \frac{x^{3}}{3}

      Ahora resolvemos podintegral.

    2. La integral del producto de una función por una constante es la constante por la integral de esta función:

      x3(x5+2)(5x4x5+25x4(x5+3)(x5+2)2)3(x5+3)dx=x3(x5+2)(5x4x5+25x4(x5+3)(x5+2)2)x5+3dx3\int \frac{x^{3} \left(x^{5} + 2\right) \left(\frac{5 x^{4}}{x^{5} + 2} - \frac{5 x^{4} \left(x^{5} + 3\right)}{\left(x^{5} + 2\right)^{2}}\right)}{3 \left(x^{5} + 3\right)}\, dx = \frac{\int \frac{x^{3} \left(x^{5} + 2\right) \left(\frac{5 x^{4}}{x^{5} + 2} - \frac{5 x^{4} \left(x^{5} + 3\right)}{\left(x^{5} + 2\right)^{2}}\right)}{x^{5} + 3}\, dx}{3}

      1. Vuelva a escribir el integrando:

        x3(x5+2)(5x4x5+25x4(x5+3)(x5+2)2)x5+3=15x2x5+3+10x2x5+2\frac{x^{3} \left(x^{5} + 2\right) \left(\frac{5 x^{4}}{x^{5} + 2} - \frac{5 x^{4} \left(x^{5} + 3\right)}{\left(x^{5} + 2\right)^{2}}\right)}{x^{5} + 3} = - \frac{15 x^{2}}{x^{5} + 3} + \frac{10 x^{2}}{x^{5} + 2}

      2. Integramos término a término:

        1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          (15x2x5+3)dx=15x2x5+3dx\int \left(- \frac{15 x^{2}}{x^{5} + 3}\right)\, dx = - 15 \int \frac{x^{2}}{x^{5} + 3}\, dx

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

            Pero la integral

            RootSum(28125t51,(ttlog(75t2+x)))\operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)}

          Por lo tanto, el resultado es: 15RootSum(28125t51,(ttlog(75t2+x)))- 15 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)}

        1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          10x2x5+2dx=10x2x5+2dx\int \frac{10 x^{2}}{x^{5} + 2}\, dx = 10 \int \frac{x^{2}}{x^{5} + 2}\, dx

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

            Pero la integral

            RootSum(12500t51,(ttlog(50t2+x)))\operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

          Por lo tanto, el resultado es: 10RootSum(12500t51,(ttlog(50t2+x)))10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

        El resultado es: 15RootSum(28125t51,(ttlog(75t2+x)))+10RootSum(12500t51,(ttlog(50t2+x)))- 15 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} + 10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

      Por lo tanto, el resultado es: 5RootSum(28125t51,(ttlog(75t2+x)))+10RootSum(12500t51,(ttlog(50t2+x)))3- 5 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} + \frac{10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}}{3}

    Método #3

    1. Vuelva a escribir el integrando:

      x2log(x5+3x5+2)=x2log(x5x5+2+3x5+2)x^{2} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)} = x^{2} \log{\left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2} \right)}

    2. Usamos la integración por partes:

      udv=uvvdu\int \operatorname{u} \operatorname{dv} = \operatorname{u}\operatorname{v} - \int \operatorname{v} \operatorname{du}

      que u(x)=log(x5x5+2+3x5+2)u{\left(x \right)} = \log{\left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2} \right)} y que dv(x)=x2\operatorname{dv}{\left(x \right)} = x^{2}.

      Entonces du(x)=5x9(x5+2)2+5x4x5+215x4(x5+2)2x5x5+2+3x5+2\operatorname{du}{\left(x \right)} = \frac{- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}}{\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}}.

      Para buscar v(x)v{\left(x \right)}:

      1. Integral xnx^{n} es xn+1n+1\frac{x^{n + 1}}{n + 1} when n1n \neq -1:

        x2dx=x33\int x^{2}\, dx = \frac{x^{3}}{3}

      Ahora resolvemos podintegral.

    3. La integral del producto de una función por una constante es la constante por la integral de esta función:

      x3(5x9(x5+2)2+5x4x5+215x4(x5+2)2)3(x5x5+2+3x5+2)dx=x3(5x9(x5+2)2+5x4x5+215x4(x5+2)2)x5x5+2+3x5+2dx3\int \frac{x^{3} \left(- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}\right)}{3 \left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}\right)}\, dx = \frac{\int \frac{x^{3} \left(- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}\right)}{\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}}\, dx}{3}

      1. Vuelva a escribir el integrando:

        x3(5x9(x5+2)2+5x4x5+215x4(x5+2)2)x5x5+2+3x5+2=15x2x5+3+10x2x5+2\frac{x^{3} \left(- \frac{5 x^{9}}{\left(x^{5} + 2\right)^{2}} + \frac{5 x^{4}}{x^{5} + 2} - \frac{15 x^{4}}{\left(x^{5} + 2\right)^{2}}\right)}{\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2}} = - \frac{15 x^{2}}{x^{5} + 3} + \frac{10 x^{2}}{x^{5} + 2}

      2. Integramos término a término:

        1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          (15x2x5+3)dx=15x2x5+3dx\int \left(- \frac{15 x^{2}}{x^{5} + 3}\right)\, dx = - 15 \int \frac{x^{2}}{x^{5} + 3}\, dx

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

            Pero la integral

            RootSum(28125t51,(ttlog(75t2+x)))\operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)}

          Por lo tanto, el resultado es: 15RootSum(28125t51,(ttlog(75t2+x)))- 15 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)}

        1. La integral del producto de una función por una constante es la constante por la integral de esta función:

          10x2x5+2dx=10x2x5+2dx\int \frac{10 x^{2}}{x^{5} + 2}\, dx = 10 \int \frac{x^{2}}{x^{5} + 2}\, dx

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

            Pero la integral

            RootSum(12500t51,(ttlog(50t2+x)))\operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

          Por lo tanto, el resultado es: 10RootSum(12500t51,(ttlog(50t2+x)))10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

        El resultado es: 15RootSum(28125t51,(ttlog(75t2+x)))+10RootSum(12500t51,(ttlog(50t2+x)))- 15 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} + 10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}

      Por lo tanto, el resultado es: 5RootSum(28125t51,(ttlog(75t2+x)))+10RootSum(12500t51,(ttlog(50t2+x)))3- 5 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} + \frac{10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}}{3}

  2. Ahora simplificar:

    x3log(x5+3x5+2)3235log(x+25)3+335log(x+35)310(23540+235540235i58+5810)log(x+50(23540+235540235i58+5810)2)310(23540+235540+235i58+5810)log(x+50(23540+235540+235i58+5810)2)3+5(33560+335560335i58+5815)log(x+75(33560+335560335i58+5815)2)+5(33560+335560+335i58+5815)log(x+75(33560+335560+335i58+5815)2)10(23554023540235i585810)log(x+50(23554023540235i585810)2)310(23554023540+235i585810)log(x+50(23554023540+235i585810)2)3+5(33556033560335i585815)log(x+75(33556033560335i585815)2)+5(33556033560+335i585815)log(x+75(33556033560+335i585815)2)\frac{x^{3} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}}{3} - \frac{2^{\frac{3}{5}} \log{\left(x + \sqrt[5]{2} \right)}}{3} + \frac{3^{\frac{3}{5}} \log{\left(x + \sqrt[5]{3} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right)^{2} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right)^{2} \right)}}{3} + 5 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right)^{2} \right)} + 5 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right)^{2} \right)} - \frac{10 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right)^{2} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right)^{2} \right)}}{3} + 5 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right)^{2} \right)} + 5 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right)^{2} \right)}

  3. Añadimos la constante de integración:

    x3log(x5+3x5+2)3235log(x+25)3+335log(x+35)310(23540+235540235i58+5810)log(x+50(23540+235540235i58+5810)2)310(23540+235540+235i58+5810)log(x+50(23540+235540+235i58+5810)2)3+5(33560+335560335i58+5815)log(x+75(33560+335560335i58+5815)2)+5(33560+335560+335i58+5815)log(x+75(33560+335560+335i58+5815)2)10(23554023540235i585810)log(x+50(23554023540235i585810)2)310(23554023540+235i585810)log(x+50(23554023540+235i585810)2)3+5(33556033560335i585815)log(x+75(33556033560335i585815)2)+5(33556033560+335i585815)log(x+75(33556033560+335i585815)2)+constant\frac{x^{3} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}}{3} - \frac{2^{\frac{3}{5}} \log{\left(x + \sqrt[5]{2} \right)}}{3} + \frac{3^{\frac{3}{5}} \log{\left(x + \sqrt[5]{3} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right)^{2} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right)^{2} \right)}}{3} + 5 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right)^{2} \right)} + 5 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right)^{2} \right)} - \frac{10 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right)^{2} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right)^{2} \right)}}{3} + 5 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right)^{2} \right)} + 5 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right)^{2} \right)}+ \mathrm{constant}


Respuesta:

x3log(x5+3x5+2)3235log(x+25)3+335log(x+35)310(23540+235540235i58+5810)log(x+50(23540+235540235i58+5810)2)310(23540+235540+235i58+5810)log(x+50(23540+235540+235i58+5810)2)3+5(33560+335560335i58+5815)log(x+75(33560+335560335i58+5815)2)+5(33560+335560+335i58+5815)log(x+75(33560+335560+335i58+5815)2)10(23554023540235i585810)log(x+50(23554023540235i585810)2)310(23554023540+235i585810)log(x+50(23554023540+235i585810)2)3+5(33556033560335i585815)log(x+75(33556033560335i585815)2)+5(33556033560+335i585815)log(x+75(33556033560+335i585815)2)+constant\frac{x^{3} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}}{3} - \frac{2^{\frac{3}{5}} \log{\left(x + \sqrt[5]{2} \right)}}{3} + \frac{3^{\frac{3}{5}} \log{\left(x + \sqrt[5]{3} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right)^{2} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} \sqrt{5}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{10}\right)^{2} \right)}}{3} + 5 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right)^{2} \right)} + 5 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} \sqrt{5}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{15}\right)^{2} \right)} - \frac{10 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} - \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right)^{2} \right)}}{3} - \frac{10 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right) \log{\left(x + 50 \left(- \frac{2^{\frac{3}{5}} \sqrt{5}}{40} - \frac{2^{\frac{3}{5}}}{40} + \frac{2^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{10}\right)^{2} \right)}}{3} + 5 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} - \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right)^{2} \right)} + 5 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right) \log{\left(x + 75 \left(- \frac{3^{\frac{3}{5}} \sqrt{5}}{60} - \frac{3^{\frac{3}{5}}}{60} + \frac{3^{\frac{3}{5}} i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{15}\right)^{2} \right)}+ \mathrm{constant}

Respuesta (Indefinida) [src]
                                                                                                                                    /            5  \
  /                                                                                                                            3    |  3        x   |
 |                                                                                                                            x *log|------ + ------|
 |       / 5    \                                                                     /       5                /        2\\         |     5        5|
 |  2    |x  + 3|                   /       5                /        2\\   10*RootSum\12500*t  - 1, t -> t*log\x + 50*t //         \2 + x    2 + x /
 | x *log|------| dx = C + 5*RootSum\28125*t  - 1, t -> t*log\x + 75*t // - ----------------------------------------------- + -----------------------
 |       | 5    |                                                                                  3                                     3           
 |       \x  + 2/                                                                                                                                    
 |                                                                                                                                                   
/                                                                                                                                                    
x2log(x5+3x5+2)dx=C+x3log(x5x5+2+3x5+2)3+5RootSum(28125t51,(ttlog(75t2+x)))10RootSum(12500t51,(ttlog(50t2+x)))3\int x^{2} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}\, dx = C + \frac{x^{3} \log{\left(\frac{x^{5}}{x^{5} + 2} + \frac{3}{x^{5} + 2} \right)}}{3} + 5 \operatorname{RootSum} {\left(28125 t^{5} - 1, \left( t \mapsto t \log{\left(75 t^{2} + x \right)} \right)\right)} - \frac{10 \operatorname{RootSum} {\left(12500 t^{5} - 1, \left( t \mapsto t \log{\left(50 t^{2} + x \right)} \right)\right)}}{3}
Gráfica
1.00001.01001.00101.00201.00301.00401.00501.00601.00701.00801.00900.5-0.5
Respuesta [src]
 oo                  
  /                  
 |                   
 |        /     5\   
 |   2    |3 + x |   
 |  x *log|------| dx
 |        |     5|   
 |        \2 + x /   
 |                   
/                    
1                    
1x2log(x5+3x5+2)dx\int\limits_{1}^{\infty} x^{2} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}\, dx
=
=
 oo                  
  /                  
 |                   
 |        /     5\   
 |   2    |3 + x |   
 |  x *log|------| dx
 |        |     5|   
 |        \2 + x /   
 |                   
/                    
1                    
1x2log(x5+3x5+2)dx\int\limits_{1}^{\infty} x^{2} \log{\left(\frac{x^{5} + 3}{x^{5} + 2} \right)}\, dx
Integral(x^2*log((3 + x^5)/(2 + x^5)), (x, 1, oo))

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