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y=2^(x/lnx)

Derivada de y=2^(x/lnx)

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

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Solución

Ha introducido [src]
   x   
 ------
 log(x)
2      
2xlog(x)2^{\frac{x}{\log{\left(x \right)}}}
2^(x/log(x))
Solución detallada
  1. Sustituimos u=xlog(x)u = \frac{x}{\log{\left(x \right)}}.

  2. ddu2u=2ulog(2)\frac{d}{d u} 2^{u} = 2^{u} \log{\left(2 \right)}

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

    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)=xf{\left(x \right)} = x y g(x)=log(x)g{\left(x \right)} = \log{\left(x \right)}.

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

      1. Según el principio, aplicamos: xx tenemos 11

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

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

      Ahora aplicamos la regla de la derivada de una divesión:

      log(x)1log(x)2\frac{\log{\left(x \right)} - 1}{\log{\left(x \right)}^{2}}

    Como resultado de la secuencia de reglas:

    2xlog(x)(log(x)1)log(2)log(x)2\frac{2^{\frac{x}{\log{\left(x \right)}}} \left(\log{\left(x \right)} - 1\right) \log{\left(2 \right)}}{\log{\left(x \right)}^{2}}


Respuesta:

2xlog(x)(log(x)1)log(2)log(x)2\frac{2^{\frac{x}{\log{\left(x \right)}}} \left(\log{\left(x \right)} - 1\right) \log{\left(2 \right)}}{\log{\left(x \right)}^{2}}

Gráfica
02468-8-6-4-2-1010-100000100000
Primera derivada [src]
   x                             
 ------                          
 log(x) /  1         1   \       
2      *|------ - -------|*log(2)
        |log(x)      2   |       
        \         log (x)/       
2xlog(x)(1log(x)1log(x)2)log(2)2^{\frac{x}{\log{\left(x \right)}}} \left(\frac{1}{\log{\left(x \right)}} - \frac{1}{\log{\left(x \right)}^{2}}\right) \log{\left(2 \right)}
Segunda derivada [src]
   x    /                             2   \       
 ------ |            2          1 - ------|       
 log(x) |/      1   \               log(x)|       
2      *||1 - ------| *log(2) - ----------|*log(2)
        \\    log(x)/               x     /       
--------------------------------------------------
                        2                         
                     log (x)                      
2xlog(x)((11log(x))2log(2)12log(x)x)log(2)log(x)2\frac{2^{\frac{x}{\log{\left(x \right)}}} \left(\left(1 - \frac{1}{\log{\left(x \right)}}\right)^{2} \log{\left(2 \right)} - \frac{1 - \frac{2}{\log{\left(x \right)}}}{x}\right) \log{\left(2 \right)}}{\log{\left(x \right)}^{2}}
Tercera derivada [src]
        /       6                  3                                             \       
   x    |1 - -------   /      1   \     2        /      1   \ /      2   \       |       
 ------ |       2      |1 - ------| *log (2)   3*|1 - ------|*|1 - ------|*log(2)|       
 log(x) |    log (x)   \    log(x)/              \    log(x)/ \    log(x)/       |       
2      *|----------- + --------------------- - ----------------------------------|*log(2)
        |      2               log(x)                       x*log(x)             |       
        \     x                                                                  /       
-----------------------------------------------------------------------------------------
                                            2                                            
                                         log (x)                                         
2xlog(x)((11log(x))3log(2)2log(x)3(12log(x))(11log(x))log(2)xlog(x)+16log(x)2x2)log(2)log(x)2\frac{2^{\frac{x}{\log{\left(x \right)}}} \left(\frac{\left(1 - \frac{1}{\log{\left(x \right)}}\right)^{3} \log{\left(2 \right)}^{2}}{\log{\left(x \right)}} - \frac{3 \left(1 - \frac{2}{\log{\left(x \right)}}\right) \left(1 - \frac{1}{\log{\left(x \right)}}\right) \log{\left(2 \right)}}{x \log{\left(x \right)}} + \frac{1 - \frac{6}{\log{\left(x \right)}^{2}}}{x^{2}}\right) \log{\left(2 \right)}}{\log{\left(x \right)}^{2}}
Gráfico
Derivada de y=2^(x/lnx)