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y=x^x/xln^2

Derivada de y=x^x/xln^2

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

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Solución

Ha introducido [src]
 x        
x     2   
--*log (x)
x         
xxxlog(x)2\frac{x^{x}}{x} \log{\left(x \right)}^{2}
(x^x/x)*log(x)^2
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)=xxlog(x)2f{\left(x \right)} = x^{x} \log{\left(x \right)}^{2} y g(x)=xg{\left(x \right)} = 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)=xxf{\left(x \right)} = x^{x}; calculamos ddxf(x)\frac{d}{d x} f{\left(x \right)}:

      1. No logro encontrar los pasos en la búsqueda de esta derivada.

        Perola derivada

        xx(log(x)+1)x^{x} \left(\log{\left(x \right)} + 1\right)

      g(x)=log(x)2g{\left(x \right)} = \log{\left(x \right)}^{2}; calculamos ddxg(x)\frac{d}{d x} g{\left(x \right)}:

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

      2. Según el principio, aplicamos: u2u^{2} tenemos 2u2 u

      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:

        2log(x)x\frac{2 \log{\left(x \right)}}{x}

      Como resultado de: xx(log(x)+1)log(x)2+2xxlog(x)xx^{x} \left(\log{\left(x \right)} + 1\right) \log{\left(x \right)}^{2} + \frac{2 x^{x} \log{\left(x \right)}}{x}

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

    1. Según el principio, aplicamos: xx tenemos 11

    Ahora aplicamos la regla de la derivada de una divesión:

    x(xx(log(x)+1)log(x)2+2xxlog(x)x)xxlog(x)2x2\frac{x \left(x^{x} \left(\log{\left(x \right)} + 1\right) \log{\left(x \right)}^{2} + \frac{2 x^{x} \log{\left(x \right)}}{x}\right) - x^{x} \log{\left(x \right)}^{2}}{x^{2}}

  2. Simplificamos:

    xx2(xlog(x)2+xlog(x)log(x)+2)log(x)x^{x - 2} \left(x \log{\left(x \right)}^{2} + x \log{\left(x \right)} - \log{\left(x \right)} + 2\right) \log{\left(x \right)}


Respuesta:

xx2(xlog(x)2+xlog(x)log(x)+2)log(x)x^{x - 2} \left(x \log{\left(x \right)}^{2} + x \log{\left(x \right)} - \log{\left(x \right)} + 2\right) \log{\left(x \right)}

Gráfica
02468-8-6-4-2-1010-2000000000020000000000
Primera derivada [src]
        /   x    x             \      x       
   2    |  x    x *(1 + log(x))|   2*x *log(x)
log (x)*|- -- + ---------------| + -----------
        |   2          x       |         2    
        \  x                   /        x     
(xx(log(x)+1)xxxx2)log(x)2+2xxlog(x)x2\left(\frac{x^{x} \left(\log{\left(x \right)} + 1\right)}{x} - \frac{x^{x}}{x^{2}}\right) \log{\left(x \right)}^{2} + \frac{2 x^{x} \log{\left(x \right)}}{x^{2}}
Segunda derivada [src]
   /                                                                        /    1         \       \
   |                                                                      4*|1 - - + log(x)|*log(x)|
 x |   2    /1               2   2    2*(1 + log(x))\   2*(-1 + log(x))     \    x         /       |
x *|log (x)*|- + (1 + log(x))  + -- - --------------| - --------------- + -------------------------|
   |        |x                    2         x       |           2                     x            |
   \        \                    x                  /          x                                   /
----------------------------------------------------------------------------------------------------
                                                 x                                                  
xx(((log(x)+1)22(log(x)+1)x+1x+2x2)log(x)2+4(log(x)+11x)log(x)x2(log(x)1)x2)x\frac{x^{x} \left(\left(\left(\log{\left(x \right)} + 1\right)^{2} - \frac{2 \left(\log{\left(x \right)} + 1\right)}{x} + \frac{1}{x} + \frac{2}{x^{2}}\right) \log{\left(x \right)}^{2} + \frac{4 \left(\log{\left(x \right)} + 1 - \frac{1}{x}\right) \log{\left(x \right)}}{x} - \frac{2 \left(\log{\left(x \right)} - 1\right)}{x^{2}}\right)}{x}
Tercera derivada [src]
   /                                                                                                                                                       /1               2   2    2*(1 + log(x))\       \
   |        /                            /1               2\                                  \                                       /    1         \   6*|- + (1 + log(x))  + -- - --------------|*log(x)|
   |        |                          3*|- + (1 + log(x)) |                                  |                       6*(-1 + log(x))*|1 - - + log(x)|     |x                    2         x       |       |
 x |   2    |            3   1    6      \x                /   3*(1 + log(x))   6*(1 + log(x))|   2*(-3 + 2*log(x))                   \    x         /     \                    x                  /       |
x *|log (x)*|(1 + log(x))  - -- - -- - --------------------- + -------------- + --------------| + ----------------- - -------------------------------- + --------------------------------------------------|
   |        |                 2    3             x                   x                 2      |            3                          2                                          x                         |
   \        \                x    x                                                   x       /           x                          x                                                                     /
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                     x                                                                                                      
xx(((log(x)+1)33((log(x)+1)2+1x)x+3(log(x)+1)x+6(log(x)+1)x21x26x3)log(x)2+6((log(x)+1)22(log(x)+1)x+1x+2x2)log(x)x6(log(x)1)(log(x)+11x)x2+2(2log(x)3)x3)x\frac{x^{x} \left(\left(\left(\log{\left(x \right)} + 1\right)^{3} - \frac{3 \left(\left(\log{\left(x \right)} + 1\right)^{2} + \frac{1}{x}\right)}{x} + \frac{3 \left(\log{\left(x \right)} + 1\right)}{x} + \frac{6 \left(\log{\left(x \right)} + 1\right)}{x^{2}} - \frac{1}{x^{2}} - \frac{6}{x^{3}}\right) \log{\left(x \right)}^{2} + \frac{6 \left(\left(\log{\left(x \right)} + 1\right)^{2} - \frac{2 \left(\log{\left(x \right)} + 1\right)}{x} + \frac{1}{x} + \frac{2}{x^{2}}\right) \log{\left(x \right)}}{x} - \frac{6 \left(\log{\left(x \right)} - 1\right) \left(\log{\left(x \right)} + 1 - \frac{1}{x}\right)}{x^{2}} + \frac{2 \left(2 \log{\left(x \right)} - 3\right)}{x^{3}}\right)}{x}
Gráfico
Derivada de y=x^x/xln^2