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(tan(x)-1)/tan(x)

Derivada de (tan(x)-1)/tan(x)

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

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Definida a trozos:

Solución

Ha introducido [src]
tan(x) - 1
----------
  tan(x)  
tan(x)1tan(x)\frac{\tan{\left(x \right)} - 1}{\tan{\left(x \right)}}
(tan(x) - 1)/tan(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)=tan(x)1f{\left(x \right)} = \tan{\left(x \right)} - 1 y g(x)=tan(x)g{\left(x \right)} = \tan{\left(x \right)}.

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

    1. diferenciamos tan(x)1\tan{\left(x \right)} - 1 miembro por miembro:

      1. La derivada de una constante 1-1 es igual a cero.

      2. Reescribimos las funciones para diferenciar:

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

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

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

    1. ddxtan(x)=1cos2(x)\frac{d}{d x} \tan{\left(x \right)} = \frac{1}{\cos^{2}{\left(x \right)}}

    Ahora aplicamos la regla de la derivada de una divesión:

    (sin2(x)+cos2(x))(tan(x)1)cos2(x)+(sin2(x)+cos2(x))tan(x)cos2(x)tan2(x)\frac{- \frac{\left(\sin^{2}{\left(x \right)} + \cos^{2}{\left(x \right)}\right) \left(\tan{\left(x \right)} - 1\right)}{\cos^{2}{\left(x \right)}} + \frac{\left(\sin^{2}{\left(x \right)} + \cos^{2}{\left(x \right)}\right) \tan{\left(x \right)}}{\cos^{2}{\left(x \right)}}}{\tan^{2}{\left(x \right)}}

  2. Simplificamos:

    1sin2(x)\frac{1}{\sin^{2}{\left(x \right)}}


Respuesta:

1sin2(x)\frac{1}{\sin^{2}{\left(x \right)}}

Gráfica
02468-8-6-4-2-1010-1000010000
Primera derivada [src]
       2      /        2   \             
1 + tan (x)   \-1 - tan (x)/*(tan(x) - 1)
----------- + ---------------------------
   tan(x)                  2             
                        tan (x)          
(tan(x)1)(tan2(x)1)tan2(x)+tan2(x)+1tan(x)\frac{\left(\tan{\left(x \right)} - 1\right) \left(- \tan^{2}{\left(x \right)} - 1\right)}{\tan^{2}{\left(x \right)}} + \frac{\tan^{2}{\left(x \right)} + 1}{\tan{\left(x \right)}}
Segunda derivada [src]
  /                                             /            2   \              \
  |                               /       2   \ |     1 + tan (x)|              |
  |                           2   \1 + tan (x)/*|-1 + -----------|*(-1 + tan(x))|
  |              /       2   \                  |          2     |              |
  |       2      \1 + tan (x)/                  \       tan (x)  /              |
2*|1 + tan (x) - -------------- + ----------------------------------------------|
  |                    2                              tan(x)                    |
  \                 tan (x)                                                     /
2((tan2(x)+1tan2(x)1)(tan(x)1)(tan2(x)+1)tan(x)(tan2(x)+1)2tan2(x)+tan2(x)+1)2 \left(\frac{\left(\frac{\tan^{2}{\left(x \right)} + 1}{\tan^{2}{\left(x \right)}} - 1\right) \left(\tan{\left(x \right)} - 1\right) \left(\tan^{2}{\left(x \right)} + 1\right)}{\tan{\left(x \right)}} - \frac{\left(\tan^{2}{\left(x \right)} + 1\right)^{2}}{\tan^{2}{\left(x \right)}} + \tan^{2}{\left(x \right)} + 1\right)
Tercera derivada [src]
  /                                                                                                                                          2 /            2   \\
  |                                                                                                                             /       2   \  |     1 + tan (x)||
  |                /                               2                  3\                  2                                   3*\1 + tan (x)/ *|-1 + -----------||
  |                |                  /       2   \      /       2   \ |     /       2   \    /       2   \ /         2   \                    |          2     ||
  |                |         2      5*\1 + tan (x)/    3*\1 + tan (x)/ |   3*\1 + tan (x)/    \1 + tan (x)/*\1 + 3*tan (x)/                    \       tan (x)  /|
2*|- (-1 + tan(x))*|2 + 2*tan (x) - ---------------- + ----------------| - ---------------- + ----------------------------- + -----------------------------------|
  |                |                       2                  4        |        tan(x)                    tan(x)                             tan(x)              |
  \                \                    tan (x)            tan (x)     /                                                                                         /
2(3(tan2(x)+1tan2(x)1)(tan2(x)+1)2tan(x)(tan(x)1)(3(tan2(x)+1)3tan4(x)5(tan2(x)+1)2tan2(x)+2tan2(x)+2)3(tan2(x)+1)2tan(x)+(tan2(x)+1)(3tan2(x)+1)tan(x))2 \left(\frac{3 \left(\frac{\tan^{2}{\left(x \right)} + 1}{\tan^{2}{\left(x \right)}} - 1\right) \left(\tan^{2}{\left(x \right)} + 1\right)^{2}}{\tan{\left(x \right)}} - \left(\tan{\left(x \right)} - 1\right) \left(\frac{3 \left(\tan^{2}{\left(x \right)} + 1\right)^{3}}{\tan^{4}{\left(x \right)}} - \frac{5 \left(\tan^{2}{\left(x \right)} + 1\right)^{2}}{\tan^{2}{\left(x \right)}} + 2 \tan^{2}{\left(x \right)} + 2\right) - \frac{3 \left(\tan^{2}{\left(x \right)} + 1\right)^{2}}{\tan{\left(x \right)}} + \frac{\left(\tan^{2}{\left(x \right)} + 1\right) \left(3 \tan^{2}{\left(x \right)} + 1\right)}{\tan{\left(x \right)}}\right)
Gráfico
Derivada de (tan(x)-1)/tan(x)