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y=ctg(inx)*sin^3xx*exp(-x)

Derivada de y=ctg(inx)*sin^3xx*exp(-x)

Función f() - derivada -er orden en el punto
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Gráfico:

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Solución

Ha introducido [src]
               3       -x
cot(log(x))*sin (x*x)*e  
sin3(xx)cot(log(x))ex\sin^{3}{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)} e^{- x}
(cot(log(x))*sin(x*x)^3)*exp(-x)
Solución detallada
  1. Se aplica la regla de la derivada parcial:

    ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)g2(x)\frac{d}{d x} \frac{f{\left(x \right)}}{g{\left(x \right)}} = \frac{- f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}}{g^{2}{\left(x \right)}}

    f(x)=sin3(xx)cot(log(x))f{\left(x \right)} = \sin^{3}{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)} y g(x)=exg{\left(x \right)} = e^{x}.

    Para calcular ddxf(x)\frac{d}{d x} f{\left(x \right)}:

    1. Se aplica la regla de la derivada de una multiplicación:

      ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)\frac{d}{d x} f{\left(x \right)} g{\left(x \right)} = f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}

      f(x)=sin3(xx)f{\left(x \right)} = \sin^{3}{\left(x x \right)}; calculamos ddxf(x)\frac{d}{d x} f{\left(x \right)}:

      1. Sustituimos u=sin(xx)u = \sin{\left(x x \right)}.

      2. Según el principio, aplicamos: u3u^{3} tenemos 3u23 u^{2}

      3. Luego se aplica una cadena de reglas. Multiplicamos por ddxsin(xx)\frac{d}{d x} \sin{\left(x x \right)}:

        1. Sustituimos u=xxu = x x.

        2. La derivada del seno es igual al coseno:

          ddusin(u)=cos(u)\frac{d}{d u} \sin{\left(u \right)} = \cos{\left(u \right)}

        3. Luego se aplica una cadena de reglas. Multiplicamos por ddxxx\frac{d}{d x} x x:

          1. Se aplica la regla de la derivada de una multiplicación:

            ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)\frac{d}{d x} f{\left(x \right)} g{\left(x \right)} = f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}

            f(x)=xf{\left(x \right)} = x; calculamos ddxf(x)\frac{d}{d x} f{\left(x \right)}:

            1. Según el principio, aplicamos: xx tenemos 11

            g(x)=xg{\left(x \right)} = x; calculamos ddxg(x)\frac{d}{d x} g{\left(x \right)}:

            1. Según el principio, aplicamos: xx tenemos 11

            Como resultado de: 2x2 x

          Como resultado de la secuencia de reglas:

          2xcos(xx)2 x \cos{\left(x x \right)}

        Como resultado de la secuencia de reglas:

        6xsin2(xx)cos(xx)6 x \sin^{2}{\left(x x \right)} \cos{\left(x x \right)}

      g(x)=cot(log(x))g{\left(x \right)} = \cot{\left(\log{\left(x \right)} \right)}; calculamos ddxg(x)\frac{d}{d x} g{\left(x \right)}:

      1. Hay varias formas de calcular esta derivada.

        Method #1

        1. Reescribimos las funciones para diferenciar:

          cot(log(x))=1tan(log(x))\cot{\left(\log{\left(x \right)} \right)} = \frac{1}{\tan{\left(\log{\left(x \right)} \right)}}

        2. Sustituimos u=tan(log(x))u = \tan{\left(\log{\left(x \right)} \right)}.

        3. Según el principio, aplicamos: 1u\frac{1}{u} tenemos 1u2- \frac{1}{u^{2}}

        4. Luego se aplica una cadena de reglas. Multiplicamos por ddxtan(log(x))\frac{d}{d x} \tan{\left(\log{\left(x \right)} \right)}:

          1. Reescribimos las funciones para diferenciar:

            tan(log(x))=sin(log(x))cos(log(x))\tan{\left(\log{\left(x \right)} \right)} = \frac{\sin{\left(\log{\left(x \right)} \right)}}{\cos{\left(\log{\left(x \right)} \right)}}

          2. Se aplica la regla de la derivada parcial:

            ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)g2(x)\frac{d}{d x} \frac{f{\left(x \right)}}{g{\left(x \right)}} = \frac{- f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}}{g^{2}{\left(x \right)}}

            f(x)=sin(log(x))f{\left(x \right)} = \sin{\left(\log{\left(x \right)} \right)} y g(x)=cos(log(x))g{\left(x \right)} = \cos{\left(\log{\left(x \right)} \right)}.

            Para calcular ddxf(x)\frac{d}{d x} f{\left(x \right)}:

            1. Sustituimos u=log(x)u = \log{\left(x \right)}.

            2. La derivada del seno es igual al coseno:

              ddusin(u)=cos(u)\frac{d}{d u} \sin{\left(u \right)} = \cos{\left(u \right)}

            3. Luego se aplica una cadena de reglas. Multiplicamos por ddxlog(x)\frac{d}{d x} \log{\left(x \right)}:

              1. Derivado log(x)\log{\left(x \right)} es 1x\frac{1}{x}.

              Como resultado de la secuencia de reglas:

              cos(log(x))x\frac{\cos{\left(\log{\left(x \right)} \right)}}{x}

            Para calcular ddxg(x)\frac{d}{d x} g{\left(x \right)}:

            1. Sustituimos u=log(x)u = \log{\left(x \right)}.

            2. La derivada del coseno es igual a menos el seno:

              dducos(u)=sin(u)\frac{d}{d u} \cos{\left(u \right)} = - \sin{\left(u \right)}

            3. Luego se aplica una cadena de reglas. Multiplicamos por ddxlog(x)\frac{d}{d x} \log{\left(x \right)}:

              1. Derivado log(x)\log{\left(x \right)} es 1x\frac{1}{x}.

              Como resultado de la secuencia de reglas:

              sin(log(x))x- \frac{\sin{\left(\log{\left(x \right)} \right)}}{x}

            Ahora aplicamos la regla de la derivada de una divesión:

            sin2(log(x))x+cos2(log(x))xcos2(log(x))\frac{\frac{\sin^{2}{\left(\log{\left(x \right)} \right)}}{x} + \frac{\cos^{2}{\left(\log{\left(x \right)} \right)}}{x}}{\cos^{2}{\left(\log{\left(x \right)} \right)}}

          Como resultado de la secuencia de reglas:

          sin2(log(x))x+cos2(log(x))xcos2(log(x))tan2(log(x))- \frac{\frac{\sin^{2}{\left(\log{\left(x \right)} \right)}}{x} + \frac{\cos^{2}{\left(\log{\left(x \right)} \right)}}{x}}{\cos^{2}{\left(\log{\left(x \right)} \right)} \tan^{2}{\left(\log{\left(x \right)} \right)}}

        Method #2

        1. Reescribimos las funciones para diferenciar:

          cot(log(x))=cos(log(x))sin(log(x))\cot{\left(\log{\left(x \right)} \right)} = \frac{\cos{\left(\log{\left(x \right)} \right)}}{\sin{\left(\log{\left(x \right)} \right)}}

        2. Se aplica la regla de la derivada parcial:

          ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)g2(x)\frac{d}{d x} \frac{f{\left(x \right)}}{g{\left(x \right)}} = \frac{- f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}}{g^{2}{\left(x \right)}}

          f(x)=cos(log(x))f{\left(x \right)} = \cos{\left(\log{\left(x \right)} \right)} y g(x)=sin(log(x))g{\left(x \right)} = \sin{\left(\log{\left(x \right)} \right)}.

          Para calcular ddxf(x)\frac{d}{d x} f{\left(x \right)}:

          1. Sustituimos u=log(x)u = \log{\left(x \right)}.

          2. La derivada del coseno es igual a menos el seno:

            dducos(u)=sin(u)\frac{d}{d u} \cos{\left(u \right)} = - \sin{\left(u \right)}

          3. Luego se aplica una cadena de reglas. Multiplicamos por ddxlog(x)\frac{d}{d x} \log{\left(x \right)}:

            1. Derivado log(x)\log{\left(x \right)} es 1x\frac{1}{x}.

            Como resultado de la secuencia de reglas:

            sin(log(x))x- \frac{\sin{\left(\log{\left(x \right)} \right)}}{x}

          Para calcular ddxg(x)\frac{d}{d x} g{\left(x \right)}:

          1. Sustituimos u=log(x)u = \log{\left(x \right)}.

          2. La derivada del seno es igual al coseno:

            ddusin(u)=cos(u)\frac{d}{d u} \sin{\left(u \right)} = \cos{\left(u \right)}

          3. Luego se aplica una cadena de reglas. Multiplicamos por ddxlog(x)\frac{d}{d x} \log{\left(x \right)}:

            1. Derivado log(x)\log{\left(x \right)} es 1x\frac{1}{x}.

            Como resultado de la secuencia de reglas:

            cos(log(x))x\frac{\cos{\left(\log{\left(x \right)} \right)}}{x}

          Ahora aplicamos la regla de la derivada de una divesión:

          sin2(log(x))xcos2(log(x))xsin2(log(x))\frac{- \frac{\sin^{2}{\left(\log{\left(x \right)} \right)}}{x} - \frac{\cos^{2}{\left(\log{\left(x \right)} \right)}}{x}}{\sin^{2}{\left(\log{\left(x \right)} \right)}}

      Como resultado de: 6xsin2(xx)cos(xx)cot(log(x))(sin2(log(x))x+cos2(log(x))x)sin3(xx)cos2(log(x))tan2(log(x))6 x \sin^{2}{\left(x x \right)} \cos{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)} - \frac{\left(\frac{\sin^{2}{\left(\log{\left(x \right)} \right)}}{x} + \frac{\cos^{2}{\left(\log{\left(x \right)} \right)}}{x}\right) \sin^{3}{\left(x x \right)}}{\cos^{2}{\left(\log{\left(x \right)} \right)} \tan^{2}{\left(\log{\left(x \right)} \right)}}

    Para calcular ddxg(x)\frac{d}{d x} g{\left(x \right)}:

    1. Derivado exe^{x} es.

    Ahora aplicamos la regla de la derivada de una divesión:

    ((6xsin2(xx)cos(xx)cot(log(x))(sin2(log(x))x+cos2(log(x))x)sin3(xx)cos2(log(x))tan2(log(x)))exexsin3(xx)cot(log(x)))e2x\left(\left(6 x \sin^{2}{\left(x x \right)} \cos{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)} - \frac{\left(\frac{\sin^{2}{\left(\log{\left(x \right)} \right)}}{x} + \frac{\cos^{2}{\left(\log{\left(x \right)} \right)}}{x}\right) \sin^{3}{\left(x x \right)}}{\cos^{2}{\left(\log{\left(x \right)} \right)} \tan^{2}{\left(\log{\left(x \right)} \right)}}\right) e^{x} - e^{x} \sin^{3}{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)}\right) e^{- 2 x}

  2. Simplificamos:

    (6x2cos3(x2)tan(log(x))+6x2cos(x2)tan(log(x))xsin3(x2)tan(log(x))sin3(x2)sin2(log(x)))exx\frac{\left(- \frac{6 x^{2} \cos^{3}{\left(x^{2} \right)}}{\tan{\left(\log{\left(x \right)} \right)}} + \frac{6 x^{2} \cos{\left(x^{2} \right)}}{\tan{\left(\log{\left(x \right)} \right)}} - \frac{x \sin^{3}{\left(x^{2} \right)}}{\tan{\left(\log{\left(x \right)} \right)}} - \frac{\sin^{3}{\left(x^{2} \right)}}{\sin^{2}{\left(\log{\left(x \right)} \right)}}\right) e^{- x}}{x}


Respuesta:

(6x2cos3(x2)tan(log(x))+6x2cos(x2)tan(log(x))xsin3(x2)tan(log(x))sin3(x2)sin2(log(x)))exx\frac{\left(- \frac{6 x^{2} \cos^{3}{\left(x^{2} \right)}}{\tan{\left(\log{\left(x \right)} \right)}} + \frac{6 x^{2} \cos{\left(x^{2} \right)}}{\tan{\left(\log{\left(x \right)} \right)}} - \frac{x \sin^{3}{\left(x^{2} \right)}}{\tan{\left(\log{\left(x \right)} \right)}} - \frac{\sin^{3}{\left(x^{2} \right)}}{\sin^{2}{\left(\log{\left(x \right)} \right)}}\right) e^{- x}}{x}

Gráfica
02468-8-6-4-2-1010-5050
Primera derivada [src]
/   3      /        2        \                                     \                                
|sin (x*x)*\-1 - cot (log(x))/          2                          |  -x      3                   -x
|----------------------------- + 6*x*sin (x*x)*cos(x*x)*cot(log(x))|*e   - sin (x*x)*cot(log(x))*e  
\              x                                                   /                                
(6xsin2(xx)cos(xx)cot(log(x))+(cot2(log(x))1)sin3(xx)x)exexsin3(xx)cot(log(x))\left(6 x \sin^{2}{\left(x x \right)} \cos{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)} + \frac{\left(- \cot^{2}{\left(\log{\left(x \right)} \right)} - 1\right) \sin^{3}{\left(x x \right)}}{x}\right) e^{- x} - e^{- x} \sin^{3}{\left(x x \right)} \cot{\left(\log{\left(x \right)} \right)}
Segunda derivada [src]
/                         /  /       2        \    / 2\                          \                                                                                                                        2/ 2\ /       2        \                    \            
|   2/ 2\                 |  \1 + cot (log(x))/*sin\x /          / 2\            |    / 2\     /   / 2\    / 2\      2    2/ 2\      2    2/ 2\\                  /       2        \    / 2\    / 2\   sin \x /*\1 + cot (log(x))/*(1 + 2*cot(log(x)))|  -x    / 2\
|sin \x /*cot(log(x)) - 2*|- -------------------------- + 6*x*cos\x /*cot(log(x))|*sin\x / + 6*\cos\x /*sin\x / - 2*x *sin \x / + 4*x *cos \x //*cot(log(x)) - 12*\1 + cot (log(x))/*cos\x /*sin\x / + -----------------------------------------------|*e  *sin\x /
|                         \              x                                       /                                                                                                                                             2                      |            
\                                                                                                                                                                                                                             x                       /            
(2(6xcos(x2)cot(log(x))(cot2(log(x))+1)sin(x2)x)sin(x2)12(cot2(log(x))+1)sin(x2)cos(x2)+6(2x2sin2(x2)+4x2cos2(x2)+sin(x2)cos(x2))cot(log(x))+sin2(x2)cot(log(x))+(2cot(log(x))+1)(cot2(log(x))+1)sin2(x2)x2)exsin(x2)\left(- 2 \left(6 x \cos{\left(x^{2} \right)} \cot{\left(\log{\left(x \right)} \right)} - \frac{\left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin{\left(x^{2} \right)}}{x}\right) \sin{\left(x^{2} \right)} - 12 \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin{\left(x^{2} \right)} \cos{\left(x^{2} \right)} + 6 \left(- 2 x^{2} \sin^{2}{\left(x^{2} \right)} + 4 x^{2} \cos^{2}{\left(x^{2} \right)} + \sin{\left(x^{2} \right)} \cos{\left(x^{2} \right)}\right) \cot{\left(\log{\left(x \right)} \right)} + \sin^{2}{\left(x^{2} \right)} \cot{\left(\log{\left(x \right)} \right)} + \frac{\left(2 \cot{\left(\log{\left(x \right)} \right)} + 1\right) \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin^{2}{\left(x^{2} \right)}}{x^{2}}\right) e^{- x} \sin{\left(x^{2} \right)}
Tercera derivada [src]
/                           /                                                                                                             2/ 2\ /       2        \                    \                      /  /       2        \    / 2\                          \                                                                                                    /       2        \ /   / 2\    / 2\      2    2/ 2\      2    2/ 2\\    / 2\        3/ 2\ /       2        \ /         2                        \         2/ 2\ /       2        \                        / 2\\    
|     3/ 2\                 |  /   / 2\    / 2\      2    2/ 2\      2    2/ 2\\                  /       2        \    / 2\    / 2\   sin \x /*\1 + cot (log(x))/*(1 + 2*cot(log(x)))|    / 2\        2/ 2\ |  \1 + cot (log(x))/*sin\x /          / 2\            |        /     3/ 2\        2/ 2\    / 2\      2    3/ 2\       2    2/ 2\    / 2\\               18*\1 + cot (log(x))/*\cos\x /*sin\x / - 2*x *sin \x / + 4*x *cos \x //*sin\x /   2*sin \x /*\1 + cot (log(x))/*\2 + 3*cot (log(x)) + 3*cot(log(x))/   18*sin \x /*\1 + cot (log(x))/*(1 + 2*cot(log(x)))*cos\x /|  -x
|- sin \x /*cot(log(x)) - 3*|6*\cos\x /*sin\x / - 2*x *sin \x / + 4*x *cos \x //*cot(log(x)) - 12*\1 + cot (log(x))/*cos\x /*sin\x / + -----------------------------------------------|*sin\x / + 3*sin \x /*|- -------------------------- + 6*x*cos\x /*cot(log(x))| - 12*x*\3*sin \x / - 6*cos \x /*sin\x / - 4*x *cos \x / + 14*x *sin \x /*cos\x //*cot(log(x)) - ------------------------------------------------------------------------------- - ------------------------------------------------------------------ + ----------------------------------------------------------|*e  
|                           |                                                                                                                                  2                      |                      \              x                                       /                                                                                                                                        x                                                                           3                                                               x                             |    
\                           \                                                                                                                                 x                       /                                                                                                                                                                                                                                                                                                 x                                                                                              /    
(12x(14x2sin2(x2)cos(x2)4x2cos3(x2)+3sin3(x2)6sin(x2)cos2(x2))cot(log(x))+3(6xcos(x2)cot(log(x))(cot2(log(x))+1)sin(x2)x)sin2(x2)3(12(cot2(log(x))+1)sin(x2)cos(x2)+6(2x2sin2(x2)+4x2cos2(x2)+sin(x2)cos(x2))cot(log(x))+(2cot(log(x))+1)(cot2(log(x))+1)sin2(x2)x2)sin(x2)sin3(x2)cot(log(x))+18(2cot(log(x))+1)(cot2(log(x))+1)sin2(x2)cos(x2)x18(cot2(log(x))+1)(2x2sin2(x2)+4x2cos2(x2)+sin(x2)cos(x2))sin(x2)x2(cot2(log(x))+1)(3cot2(log(x))+3cot(log(x))+2)sin3(x2)x3)ex\left(- 12 x \left(14 x^{2} \sin^{2}{\left(x^{2} \right)} \cos{\left(x^{2} \right)} - 4 x^{2} \cos^{3}{\left(x^{2} \right)} + 3 \sin^{3}{\left(x^{2} \right)} - 6 \sin{\left(x^{2} \right)} \cos^{2}{\left(x^{2} \right)}\right) \cot{\left(\log{\left(x \right)} \right)} + 3 \left(6 x \cos{\left(x^{2} \right)} \cot{\left(\log{\left(x \right)} \right)} - \frac{\left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin{\left(x^{2} \right)}}{x}\right) \sin^{2}{\left(x^{2} \right)} - 3 \left(- 12 \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin{\left(x^{2} \right)} \cos{\left(x^{2} \right)} + 6 \left(- 2 x^{2} \sin^{2}{\left(x^{2} \right)} + 4 x^{2} \cos^{2}{\left(x^{2} \right)} + \sin{\left(x^{2} \right)} \cos{\left(x^{2} \right)}\right) \cot{\left(\log{\left(x \right)} \right)} + \frac{\left(2 \cot{\left(\log{\left(x \right)} \right)} + 1\right) \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin^{2}{\left(x^{2} \right)}}{x^{2}}\right) \sin{\left(x^{2} \right)} - \sin^{3}{\left(x^{2} \right)} \cot{\left(\log{\left(x \right)} \right)} + \frac{18 \left(2 \cot{\left(\log{\left(x \right)} \right)} + 1\right) \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \sin^{2}{\left(x^{2} \right)} \cos{\left(x^{2} \right)}}{x} - \frac{18 \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \left(- 2 x^{2} \sin^{2}{\left(x^{2} \right)} + 4 x^{2} \cos^{2}{\left(x^{2} \right)} + \sin{\left(x^{2} \right)} \cos{\left(x^{2} \right)}\right) \sin{\left(x^{2} \right)}}{x} - \frac{2 \left(\cot^{2}{\left(\log{\left(x \right)} \right)} + 1\right) \left(3 \cot^{2}{\left(\log{\left(x \right)} \right)} + 3 \cot{\left(\log{\left(x \right)} \right)} + 2\right) \sin^{3}{\left(x^{2} \right)}}{x^{3}}\right) e^{- x}
Gráfico
Derivada de y=ctg(inx)*sin^3xx*exp(-x)