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Derivada de y=cos^4*((ln^5x)/x^2)

Función f() - derivada -er orden en el punto
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Solución

Ha introducido [src]
    /   5   \
   4|log (x)|
cos |-------|
    |    2  |
    \   x   /
cos4(log(x)5x2)\cos^{4}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}
cos(log(x)^5/x^2)^4
Solución detallada
  1. Sustituimos u=cos(log(x)5x2)u = \cos{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}.

  2. Según el principio, aplicamos: u4u^{4} tenemos 4u34 u^{3}

  3. Luego se aplica una cadena de reglas. Multiplicamos por ddxcos(log(x)5x2)\frac{d}{d x} \cos{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}:

    1. Sustituimos u=log(x)5x2u = \frac{\log{\left(x \right)}^{5}}{x^{2}}.

    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)5x2\frac{d}{d x} \frac{\log{\left(x \right)}^{5}}{x^{2}}:

      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)=log(x)5f{\left(x \right)} = \log{\left(x \right)}^{5} y g(x)=x2g{\left(x \right)} = x^{2}.

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

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

        2. Según el principio, aplicamos: u5u^{5} tenemos 5u45 u^{4}

        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:

          5log(x)4x\frac{5 \log{\left(x \right)}^{4}}{x}

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

        1. Según el principio, aplicamos: x2x^{2} tenemos 2x2 x

        Ahora aplicamos la regla de la derivada de una divesión:

        2xlog(x)5+5xlog(x)4x4\frac{- 2 x \log{\left(x \right)}^{5} + 5 x \log{\left(x \right)}^{4}}{x^{4}}

      Como resultado de la secuencia de reglas:

      (2xlog(x)5+5xlog(x)4)sin(log(x)5x2)x4- \frac{\left(- 2 x \log{\left(x \right)}^{5} + 5 x \log{\left(x \right)}^{4}\right) \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{4}}

    Como resultado de la secuencia de reglas:

    4(2xlog(x)5+5xlog(x)4)sin(log(x)5x2)cos3(log(x)5x2)x4- \frac{4 \left(- 2 x \log{\left(x \right)}^{5} + 5 x \log{\left(x \right)}^{4}\right) \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos^{3}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{4}}

  4. Simplificamos:

    4(2log(x)5)log(x)4sin(log(x)5x2)cos3(log(x)5x2)x3\frac{4 \left(2 \log{\left(x \right)} - 5\right) \log{\left(x \right)}^{4} \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos^{3}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{3}}


Respuesta:

4(2log(x)5)log(x)4sin(log(x)5x2)cos3(log(x)5x2)x3\frac{4 \left(2 \log{\left(x \right)} - 5\right) \log{\left(x \right)}^{4} \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos^{3}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{3}}

Primera derivada [src]
       /   5   \ /       5           4   \    /   5   \
      3|log (x)| |  2*log (x)   5*log (x)|    |log (x)|
-4*cos |-------|*|- --------- + ---------|*sin|-------|
       |    2  | |       3            2  |    |    2  |
       \   x   / \      x          x*x   /    \   x   /
4(5log(x)4xx22log(x)5x3)sin(log(x)5x2)cos3(log(x)5x2)- 4 \left(\frac{5 \log{\left(x \right)}^{4}}{x x^{2}} - \frac{2 \log{\left(x \right)}^{5}}{x^{3}}\right) \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos^{3}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}
Segunda derivada [src]
                        /                                                                               /   5   \                                         /   5   \\
                        |                                                                         2    2|log (x)|    5                      2    5       2|log (x)||
                        |                                                           (5 - 2*log(x)) *cos |-------|*log (x)   3*(5 - 2*log(x)) *log (x)*sin |-------||
      /   5   \         |                                  /   5   \    /   5   \                       |    2  |                                         |    2  ||
     2|log (x)|    3    |  /                      2   \    |log (x)|    |log (x)|                       \   x   /                                         \   x   /|
4*cos |-------|*log (x)*|- \20 - 25*log(x) + 6*log (x)/*cos|-------|*sin|-------| - ------------------------------------- + ---------------------------------------|
      |    2  |         |                                  |    2  |    |    2  |                      2                                        2                  |
      \   x   /         \                                  \   x   /    \   x   /                     x                                        x                   /
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                  4                                                                                 
                                                                                 x                                                                                  
4((6log(x)225log(x)+20)sin(log(x)5x2)cos(log(x)5x2)+3(52log(x))2log(x)5sin2(log(x)5x2)x2(52log(x))2log(x)5cos2(log(x)5x2)x2)log(x)3cos2(log(x)5x2)x4\frac{4 \left(- \left(6 \log{\left(x \right)}^{2} - 25 \log{\left(x \right)} + 20\right) \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} + \frac{3 \left(5 - 2 \log{\left(x \right)}\right)^{2} \log{\left(x \right)}^{5} \sin^{2}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{2}} - \frac{\left(5 - 2 \log{\left(x \right)}\right)^{2} \log{\left(x \right)}^{5} \cos^{2}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{2}}\right) \log{\left(x \right)}^{3} \cos^{2}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{4}}
Tercera derivada [src]
          /                                                                                                          /   5   \         /   5   \                                                                              /   5   \             /   5   \                 /   5   \                                                /   5   \\             
          |                                                                                           3    10       3|log (x)|        3|log (x)|    5                   /                      2   \                    3    2|log (x)|    10       |log (x)|        5       2|log (x)|                /                      2   \    |log (x)||             
          |                                                                           6*(5 - 2*log(x)) *log  (x)*sin |-------|   3*cos |-------|*log (x)*(5 - 2*log(x))*\20 - 25*log(x) + 6*log (x)/   10*(5 - 2*log(x)) *cos |-------|*log  (x)*sin|-------|   9*log (x)*sin |-------|*(5 - 2*log(x))*\20 - 25*log(x) + 6*log (x)/*cos|-------||             
          |      /   5   \                                                /   5   \                                  |    2  |         |    2  |                                                                              |    2  |             |    2  |                 |    2  |                                                |    2  ||    /   5   \
     2    |     2|log (x)| /            2            3               \    |log (x)|                                  \   x   /         \   x   /                                                                              \   x   /             \   x   /                 \   x   /                                                \   x   /|    |log (x)|
4*log (x)*|2*cos |-------|*\-30 - 65*log (x) + 12*log (x) + 90*log(x)/*sin|-------| - ---------------------------------------- - ------------------------------------------------------------------- + ------------------------------------------------------ + --------------------------------------------------------------------------------|*cos|-------|
          |      |    2  |                                                |    2  |                       4                                                        2                                                              4                                                                     2                                       |    |    2  |
          \      \   x   /                                                \   x   /                      x                                                        x                                                              x                                                                     x                                        /    \   x   /
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                                                                                                                                                                               5                                                                                                                                                                              
                                                                                                                                                                              x                                                                                                                                                                               
4(2(12log(x)365log(x)2+90log(x)30)sin(log(x)5x2)cos2(log(x)5x2)+9(52log(x))(6log(x)225log(x)+20)log(x)5sin2(log(x)5x2)cos(log(x)5x2)x23(52log(x))(6log(x)225log(x)+20)log(x)5cos3(log(x)5x2)x26(52log(x))3log(x)10sin3(log(x)5x2)x4+10(52log(x))3log(x)10sin(log(x)5x2)cos2(log(x)5x2)x4)log(x)2cos(log(x)5x2)x5\frac{4 \left(2 \left(12 \log{\left(x \right)}^{3} - 65 \log{\left(x \right)}^{2} + 90 \log{\left(x \right)} - 30\right) \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos^{2}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} + \frac{9 \left(5 - 2 \log{\left(x \right)}\right) \left(6 \log{\left(x \right)}^{2} - 25 \log{\left(x \right)} + 20\right) \log{\left(x \right)}^{5} \sin^{2}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{2}} - \frac{3 \left(5 - 2 \log{\left(x \right)}\right) \left(6 \log{\left(x \right)}^{2} - 25 \log{\left(x \right)} + 20\right) \log{\left(x \right)}^{5} \cos^{3}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{2}} - \frac{6 \left(5 - 2 \log{\left(x \right)}\right)^{3} \log{\left(x \right)}^{10} \sin^{3}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{4}} + \frac{10 \left(5 - 2 \log{\left(x \right)}\right)^{3} \log{\left(x \right)}^{10} \sin{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)} \cos^{2}{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{4}}\right) \log{\left(x \right)}^{2} \cos{\left(\frac{\log{\left(x \right)}^{5}}{x^{2}} \right)}}{x^{5}}