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sqrt(tgx)/(x^2+1)

Derivada de sqrt(tgx)/(x^2+1)

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

Ha introducido [src]
  ________
\/ tan(x) 
----------
   2      
  x  + 1  
tan(x)x2+1\frac{\sqrt{\tan{\left(x \right)}}}{x^{2} + 1}
sqrt(tan(x))/(x^2 + 1)
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)f{\left(x \right)} = \sqrt{\tan{\left(x \right)}} y g(x)=x2+1g{\left(x \right)} = x^{2} + 1.

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

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

    2. Según el principio, aplicamos: u\sqrt{u} tenemos 12u\frac{1}{2 \sqrt{u}}

    3. Luego se aplica una cadena de reglas. Multiplicamos por ddxtan(x)\frac{d}{d x} \tan{\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 la secuencia de reglas:

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

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

    1. diferenciamos x2+1x^{2} + 1 miembro por miembro:

      1. La derivada de una constante 11 es igual a cero.

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

      Como resultado de: 2x2 x

    Ahora aplicamos la regla de la derivada de una divesión:

    2xtan(x)+(x2+1)(sin2(x)+cos2(x))2cos2(x)tan(x)(x2+1)2\frac{- 2 x \sqrt{\tan{\left(x \right)}} + \frac{\left(x^{2} + 1\right) \left(\sin^{2}{\left(x \right)} + \cos^{2}{\left(x \right)}\right)}{2 \cos^{2}{\left(x \right)} \sqrt{\tan{\left(x \right)}}}}{\left(x^{2} + 1\right)^{2}}

  2. Simplificamos:

    x22xsin(2x)+12(x2+1)2cos2(x)tan(x)\frac{x^{2} - 2 x \sin{\left(2 x \right)} + 1}{2 \left(x^{2} + 1\right)^{2} \cos^{2}{\left(x \right)} \sqrt{\tan{\left(x \right)}}}


Respuesta:

x22xsin(2x)+12(x2+1)2cos2(x)tan(x)\frac{x^{2} - 2 x \sin{\left(2 x \right)} + 1}{2 \left(x^{2} + 1\right)^{2} \cos^{2}{\left(x \right)} \sqrt{\tan{\left(x \right)}}}

Gráfica
02468-8-6-4-2-1010020
Primera derivada [src]
           2                        
    1   tan (x)                     
    - + -------             ________
    2      2          2*x*\/ tan(x) 
------------------- - --------------
/ 2    \   ________             2   
\x  + 1/*\/ tan(x)      / 2    \    
                        \x  + 1/    
2xtan(x)(x2+1)2+tan2(x)2+12(x2+1)tan(x)- \frac{2 x \sqrt{\tan{\left(x \right)}}}{\left(x^{2} + 1\right)^{2}} + \frac{\frac{\tan^{2}{\left(x \right)}}{2} + \frac{1}{2}}{\left(x^{2} + 1\right) \sqrt{\tan{\left(x \right)}}}
Segunda derivada [src]
                /                        2   \                /         2 \                      
  /       2   \ |      ________   1 + tan (x)|       ________ |      4*x  |                      
  \1 + tan (x)/*|- 4*\/ tan(x)  + -----------|   2*\/ tan(x) *|-1 + ------|                      
                |                     3/2    |                |          2|        /       2   \ 
                \                  tan   (x) /                \     1 + x /    2*x*\1 + tan (x)/ 
- -------------------------------------------- + -------------------------- - -------------------
                       4                                        2             /     2\   ________
                                                           1 + x              \1 + x /*\/ tan(x) 
-------------------------------------------------------------------------------------------------
                                                   2                                             
                                              1 + x                                              
2x(tan2(x)+1)(x2+1)tan(x)(tan2(x)+1tan32(x)4tan(x))(tan2(x)+1)4+2(4x2x2+11)tan(x)x2+1x2+1\frac{- \frac{2 x \left(\tan^{2}{\left(x \right)} + 1\right)}{\left(x^{2} + 1\right) \sqrt{\tan{\left(x \right)}}} - \frac{\left(\frac{\tan^{2}{\left(x \right)} + 1}{\tan^{\frac{3}{2}}{\left(x \right)}} - 4 \sqrt{\tan{\left(x \right)}}\right) \left(\tan^{2}{\left(x \right)} + 1\right)}{4} + \frac{2 \left(\frac{4 x^{2}}{x^{2} + 1} - 1\right) \sqrt{\tan{\left(x \right)}}}{x^{2} + 1}}{x^{2} + 1}
Tercera derivada [src]
              /                                                2\                                                                                                                   
              |                 /       2   \     /       2   \ |                   /         2 \                   /         2 \                     /                        2   \
/       2   \ |      3/2      4*\1 + tan (x)/   3*\1 + tan (x)/ |          ________ |      2*x  |     /       2   \ |      4*x  |       /       2   \ |      ________   1 + tan (x)|
\1 + tan (x)/*|16*tan   (x) - --------------- + ----------------|   24*x*\/ tan(x) *|-1 + ------|   3*\1 + tan (x)/*|-1 + ------|   3*x*\1 + tan (x)/*|- 4*\/ tan(x)  + -----------|
              |                    ________           5/2       |                   |          2|                   |          2|                     |                     3/2    |
              \                  \/ tan(x)         tan   (x)    /                   \     1 + x /                   \     1 + x /                     \                  tan   (x) /
----------------------------------------------------------------- - ----------------------------- + ----------------------------- + ------------------------------------------------
                                8                                                     2                  /     2\   ________                             /     2\                   
                                                                              /     2\                   \1 + x /*\/ tan(x)                            2*\1 + x /                   
                                                                              \1 + x /                                                                                              
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                            2                                                                                       
                                                                                       1 + x                                                                                        
3x(tan2(x)+1tan32(x)4tan(x))(tan2(x)+1)2(x2+1)24x(2x2x2+11)tan(x)(x2+1)2+(tan2(x)+1)(3(tan2(x)+1)2tan52(x)4(tan2(x)+1)tan(x)+16tan32(x))8+3(4x2x2+11)(tan2(x)+1)(x2+1)tan(x)x2+1\frac{\frac{3 x \left(\frac{\tan^{2}{\left(x \right)} + 1}{\tan^{\frac{3}{2}}{\left(x \right)}} - 4 \sqrt{\tan{\left(x \right)}}\right) \left(\tan^{2}{\left(x \right)} + 1\right)}{2 \left(x^{2} + 1\right)} - \frac{24 x \left(\frac{2 x^{2}}{x^{2} + 1} - 1\right) \sqrt{\tan{\left(x \right)}}}{\left(x^{2} + 1\right)^{2}} + \frac{\left(\tan^{2}{\left(x \right)} + 1\right) \left(\frac{3 \left(\tan^{2}{\left(x \right)} + 1\right)^{2}}{\tan^{\frac{5}{2}}{\left(x \right)}} - \frac{4 \left(\tan^{2}{\left(x \right)} + 1\right)}{\sqrt{\tan{\left(x \right)}}} + 16 \tan^{\frac{3}{2}}{\left(x \right)}\right)}{8} + \frac{3 \left(\frac{4 x^{2}}{x^{2} + 1} - 1\right) \left(\tan^{2}{\left(x \right)} + 1\right)}{\left(x^{2} + 1\right) \sqrt{\tan{\left(x \right)}}}}{x^{2} + 1}
Gráfico
Derivada de sqrt(tgx)/(x^2+1)