Sr Examen

Derivada de y=(sinx)^cosxtanx

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

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Definida a trozos:

Solución

Ha introducido [src]
   cos(x)          
sin      (x)*tan(x)
sincos(x)(x)tan(x)\sin^{\cos{\left(x \right)}}{\left(x \right)} \tan{\left(x \right)}
sin(x)^cos(x)*tan(x)
Solución detallada
  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)=sincos(x)(x)f{\left(x \right)} = \sin^{\cos{\left(x \right)}}{\left(x \right)}; 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

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

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

    1. Reescribimos las funciones para diferenciar:

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

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

      1. La derivada del seno es igual al coseno:

        ddxsin(x)=cos(x)\frac{d}{d x} \sin{\left(x \right)} = \cos{\left(x \right)}

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

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

        ddxcos(x)=sin(x)\frac{d}{d x} \cos{\left(x \right)} = - \sin{\left(x \right)}

      Ahora aplicamos la regla de la derivada de una divesión:

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

    Como resultado de: (log(cos(x))+1)coscos(x)(x)tan(x)+(sin2(x)+cos2(x))sincos(x)(x)cos2(x)\left(\log{\left(\cos{\left(x \right)} \right)} + 1\right) \cos^{\cos{\left(x \right)}}{\left(x \right)} \tan{\left(x \right)} + \frac{\left(\sin^{2}{\left(x \right)} + \cos^{2}{\left(x \right)}\right) \sin^{\cos{\left(x \right)}}{\left(x \right)}}{\cos^{2}{\left(x \right)}}

  2. Simplificamos:

    (log(cos(x))+1)coscos(x)+2(x)tan(x)+sincos(x)(x)cos2(x)\frac{\left(\log{\left(\cos{\left(x \right)} \right)} + 1\right) \cos^{\cos{\left(x \right)} + 2}{\left(x \right)} \tan{\left(x \right)} + \sin^{\cos{\left(x \right)}}{\left(x \right)}}{\cos^{2}{\left(x \right)}}


Respuesta:

(log(cos(x))+1)coscos(x)+2(x)tan(x)+sincos(x)(x)cos2(x)\frac{\left(\log{\left(\cos{\left(x \right)} \right)} + 1\right) \cos^{\cos{\left(x \right)} + 2}{\left(x \right)} \tan{\left(x \right)} + \sin^{\cos{\left(x \right)}}{\left(x \right)}}{\cos^{2}{\left(x \right)}}

Gráfica
02468-8-6-4-2-1010-10001000
Primera derivada [src]
                                          /   2                        \       
   cos(x)    /       2   \      cos(x)    |cos (x)                     |       
sin      (x)*\1 + tan (x)/ + sin      (x)*|------- - log(sin(x))*sin(x)|*tan(x)
                                          \ sin(x)                     /       
(log(sin(x))sin(x)+cos2(x)sin(x))sincos(x)(x)tan(x)+(tan2(x)+1)sincos(x)(x)\left(- \log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} + \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right) \sin^{\cos{\left(x \right)}}{\left(x \right)} \tan{\left(x \right)} + \left(\tan^{2}{\left(x \right)} + 1\right) \sin^{\cos{\left(x \right)}}{\left(x \right)}
Segunda derivada [src]
             //                              2                                     \                                                                                 \
             ||/                        2   \    /       2                 \       |                          /                        2   \                         |
   cos(x)    |||                     cos (x)|    |    cos (x)              |       |            /       2   \ |                     cos (x)|     /       2   \       |
sin      (x)*|||log(sin(x))*sin(x) - -------|  - |3 + ------- + log(sin(x))|*cos(x)|*tan(x) - 2*\1 + tan (x)/*|log(sin(x))*sin(x) - -------| + 2*\1 + tan (x)/*tan(x)|
             ||\                      sin(x)/    |       2                 |       |                          \                      sin(x)/                         |
             \\                                  \    sin (x)              /       /                                                                                 /
(2(log(sin(x))sin(x)cos2(x)sin(x))(tan2(x)+1)+((log(sin(x))sin(x)cos2(x)sin(x))2(log(sin(x))+3+cos2(x)sin2(x))cos(x))tan(x)+2(tan2(x)+1)tan(x))sincos(x)(x)\left(- 2 \left(\log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} - \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right) \left(\tan^{2}{\left(x \right)} + 1\right) + \left(\left(\log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} - \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right)^{2} - \left(\log{\left(\sin{\left(x \right)} \right)} + 3 + \frac{\cos^{2}{\left(x \right)}}{\sin^{2}{\left(x \right)}}\right) \cos{\left(x \right)}\right) \tan{\left(x \right)} + 2 \left(\tan^{2}{\left(x \right)} + 1\right) \tan{\left(x \right)}\right) \sin^{\cos{\left(x \right)}}{\left(x \right)}
Tercera derivada [src]
             //                                3                                                                                                                              \                                                            /                              2                                     \                                                        \
             ||  /                        2   \                                         2           4        /                        2   \ /       2                 \       |                                                            |/                        2   \    /       2                 \       |                   /                        2   \       |
   cos(x)    ||  |                     cos (x)|                                    2*cos (x)   2*cos (x)     |                     cos (x)| |    cos (x)              |       |            /       2   \ /         2   \     /       2   \ ||                     cos (x)|    |    cos (x)              |       |     /       2   \ |                     cos (x)|       |
sin      (x)*||- |log(sin(x))*sin(x) - -------|  + 3*sin(x) + log(sin(x))*sin(x) + --------- + --------- + 3*|log(sin(x))*sin(x) - -------|*|3 + ------- + log(sin(x))|*cos(x)|*tan(x) + 2*\1 + tan (x)/*\1 + 3*tan (x)/ + 3*\1 + tan (x)/*||log(sin(x))*sin(x) - -------|  - |3 + ------- + log(sin(x))|*cos(x)| - 6*\1 + tan (x)/*|log(sin(x))*sin(x) - -------|*tan(x)|
             ||  \                      sin(x)/                                      sin(x)        3         \                      sin(x)/ |       2                 |       |                                                            |\                      sin(x)/    |       2                 |       |                   \                      sin(x)/       |
             \\                                                                                 sin (x)                                     \    sin (x)              /       /                                                            \                                  \    sin (x)              /       /                                                        /
(6(log(sin(x))sin(x)cos2(x)sin(x))(tan2(x)+1)tan(x)+3((log(sin(x))sin(x)cos2(x)sin(x))2(log(sin(x))+3+cos2(x)sin2(x))cos(x))(tan2(x)+1)+2(tan2(x)+1)(3tan2(x)+1)+((log(sin(x))sin(x)cos2(x)sin(x))3+3(log(sin(x))sin(x)cos2(x)sin(x))(log(sin(x))+3+cos2(x)sin2(x))cos(x)+log(sin(x))sin(x)+3sin(x)+2cos2(x)sin(x)+2cos4(x)sin3(x))tan(x))sincos(x)(x)\left(- 6 \left(\log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} - \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right) \left(\tan^{2}{\left(x \right)} + 1\right) \tan{\left(x \right)} + 3 \left(\left(\log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} - \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right)^{2} - \left(\log{\left(\sin{\left(x \right)} \right)} + 3 + \frac{\cos^{2}{\left(x \right)}}{\sin^{2}{\left(x \right)}}\right) \cos{\left(x \right)}\right) \left(\tan^{2}{\left(x \right)} + 1\right) + 2 \left(\tan^{2}{\left(x \right)} + 1\right) \left(3 \tan^{2}{\left(x \right)} + 1\right) + \left(- \left(\log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} - \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right)^{3} + 3 \left(\log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} - \frac{\cos^{2}{\left(x \right)}}{\sin{\left(x \right)}}\right) \left(\log{\left(\sin{\left(x \right)} \right)} + 3 + \frac{\cos^{2}{\left(x \right)}}{\sin^{2}{\left(x \right)}}\right) \cos{\left(x \right)} + \log{\left(\sin{\left(x \right)} \right)} \sin{\left(x \right)} + 3 \sin{\left(x \right)} + \frac{2 \cos^{2}{\left(x \right)}}{\sin{\left(x \right)}} + \frac{2 \cos^{4}{\left(x \right)}}{\sin^{3}{\left(x \right)}}\right) \tan{\left(x \right)}\right) \sin^{\cos{\left(x \right)}}{\left(x \right)}
Gráfico
Derivada de y=(sinx)^cosxtanx