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y=sinx/(inx+x^1/2)

Derivada de y=sinx/(inx+x^1/2)

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

Ha introducido [src]
    sin(x)    
--------------
           ___
log(x) + \/ x 
sin(x)x+log(x)\frac{\sin{\left(x \right)}}{\sqrt{x} + \log{\left(x \right)}}
sin(x)/(log(x) + sqrt(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)=sin(x)f{\left(x \right)} = \sin{\left(x \right)} y g(x)=x+log(x)g{\left(x \right)} = \sqrt{x} + \log{\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. diferenciamos x+log(x)\sqrt{x} + \log{\left(x \right)} miembro por miembro:

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

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

      Como resultado de: 1x+12x\frac{1}{x} + \frac{1}{2 \sqrt{x}}

    Ahora aplicamos la regla de la derivada de una divesión:

    (1x+12x)sin(x)+(x+log(x))cos(x)(x+log(x))2\frac{- \left(\frac{1}{x} + \frac{1}{2 \sqrt{x}}\right) \sin{\left(x \right)} + \left(\sqrt{x} + \log{\left(x \right)}\right) \cos{\left(x \right)}}{\left(\sqrt{x} + \log{\left(x \right)}\right)^{2}}

  2. Simplificamos:

    x32(x+log(x))cos(x)(2x+x)sin(x)2x32(x+log(x))2\frac{x^{\frac{3}{2}} \left(\sqrt{x} + \log{\left(x \right)}\right) \cos{\left(x \right)} - \frac{\left(2 \sqrt{x} + x\right) \sin{\left(x \right)}}{2}}{x^{\frac{3}{2}} \left(\sqrt{x} + \log{\left(x \right)}\right)^{2}}


Respuesta:

x32(x+log(x))cos(x)(2x+x)sin(x)2x32(x+log(x))2\frac{x^{\frac{3}{2}} \left(\sqrt{x} + \log{\left(x \right)}\right) \cos{\left(x \right)} - \frac{\left(2 \sqrt{x} + x\right) \sin{\left(x \right)}}{2}}{x^{\frac{3}{2}} \left(\sqrt{x} + \log{\left(x \right)}\right)^{2}}

Gráfica
02468-8-6-4-2-1010-20002000
Primera derivada [src]
                 /  1      1   \       
                 |- - - -------|*sin(x)
                 |  x       ___|       
    cos(x)       \      2*\/ x /       
-------------- + ----------------------
           ___                     2   
log(x) + \/ x      /           ___\    
                   \log(x) + \/ x /    
(1x12x)sin(x)(x+log(x))2+cos(x)x+log(x)\frac{\left(- \frac{1}{x} - \frac{1}{2 \sqrt{x}}\right) \sin{\left(x \right)}}{\left(\sqrt{x} + \log{\left(x \right)}\right)^{2}} + \frac{\cos{\left(x \right)}}{\sqrt{x} + \log{\left(x \right)}}
Segunda derivada [src]
                               /                         2\       
                               |              /  1     2\ |       
                               |            2*|----- + -| |       
                               |              |  ___   x| |       
          /  1     2\          | 1     4      \\/ x     / |       
          |----- + -|*cos(x)   |---- + -- + --------------|*sin(x)
          |  ___   x|          | 3/2    2     ___         |       
          \\/ x     /          \x      x    \/ x  + log(x)/       
-sin(x) - ------------------ + -----------------------------------
              ___                         /  ___         \        
            \/ x  + log(x)              4*\\/ x  + log(x)/        
------------------------------------------------------------------
                            ___                                   
                          \/ x  + log(x)                          
(2x+1x)cos(x)x+log(x)sin(x)+(2(2x+1x)2x+log(x)+4x2+1x32)sin(x)4(x+log(x))x+log(x)\frac{- \frac{\left(\frac{2}{x} + \frac{1}{\sqrt{x}}\right) \cos{\left(x \right)}}{\sqrt{x} + \log{\left(x \right)}} - \sin{\left(x \right)} + \frac{\left(\frac{2 \left(\frac{2}{x} + \frac{1}{\sqrt{x}}\right)^{2}}{\sqrt{x} + \log{\left(x \right)}} + \frac{4}{x^{2}} + \frac{1}{x^{\frac{3}{2}}}\right) \sin{\left(x \right)}}{4 \left(\sqrt{x} + \log{\left(x \right)}\right)}}{\sqrt{x} + \log{\left(x \right)}}
Tercera derivada [src]
          /                           3                             \                                                                      
          |                /  1     2\       / 1     4 \ /  1     2\|                                   /                         2\       
          |              6*|----- + -|     6*|---- + --|*|----- + -||                                   |              /  1     2\ |       
          |                |  ___   x|       | 3/2    2| |  ___   x||                                   |            2*|----- + -| |       
          | 3     16       \\/ x     /       \x      x / \\/ x     /|                                   |              |  ___   x| |       
          |---- + -- + ----------------- + -------------------------|*sin(x)     /  1     2\            | 1     4      \\/ x     / |       
          | 5/2    3                   2           ___              |          3*|----- + -|*sin(x)   3*|---- + -- + --------------|*cos(x)
          |x      x    /  ___         \          \/ x  + log(x)     |            |  ___   x|            | 3/2    2     ___         |       
          \            \\/ x  + log(x)/                             /            \\/ x     /            \x      x    \/ x  + log(x)/       
-cos(x) - ------------------------------------------------------------------ + -------------------- + -------------------------------------
                                    /  ___         \                              /  ___         \                /  ___         \         
                                  8*\\/ x  + log(x)/                            2*\\/ x  + log(x)/              4*\\/ x  + log(x)/         
-------------------------------------------------------------------------------------------------------------------------------------------
                                                                 ___                                                                       
                                                               \/ x  + log(x)                                                              
3(2x+1x)sin(x)2(x+log(x))cos(x)+3(2(2x+1x)2x+log(x)+4x2+1x32)cos(x)4(x+log(x))(6(4x2+1x32)(2x+1x)x+log(x)+6(2x+1x)3(x+log(x))2+16x3+3x52)sin(x)8(x+log(x))x+log(x)\frac{\frac{3 \left(\frac{2}{x} + \frac{1}{\sqrt{x}}\right) \sin{\left(x \right)}}{2 \left(\sqrt{x} + \log{\left(x \right)}\right)} - \cos{\left(x \right)} + \frac{3 \left(\frac{2 \left(\frac{2}{x} + \frac{1}{\sqrt{x}}\right)^{2}}{\sqrt{x} + \log{\left(x \right)}} + \frac{4}{x^{2}} + \frac{1}{x^{\frac{3}{2}}}\right) \cos{\left(x \right)}}{4 \left(\sqrt{x} + \log{\left(x \right)}\right)} - \frac{\left(\frac{6 \left(\frac{4}{x^{2}} + \frac{1}{x^{\frac{3}{2}}}\right) \left(\frac{2}{x} + \frac{1}{\sqrt{x}}\right)}{\sqrt{x} + \log{\left(x \right)}} + \frac{6 \left(\frac{2}{x} + \frac{1}{\sqrt{x}}\right)^{3}}{\left(\sqrt{x} + \log{\left(x \right)}\right)^{2}} + \frac{16}{x^{3}} + \frac{3}{x^{\frac{5}{2}}}\right) \sin{\left(x \right)}}{8 \left(\sqrt{x} + \log{\left(x \right)}\right)}}{\sqrt{x} + \log{\left(x \right)}}
Gráfico
Derivada de y=sinx/(inx+x^1/2)