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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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Gráfico:

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Solución

Ha introducido [src]
sin(x)     ___
------ + \/ x 
log(x)        
x+sin(x)log(x)\sqrt{x} + \frac{\sin{\left(x \right)}}{\log{\left(x \right)}}
sin(x)/log(x) + sqrt(x)
Solución detallada
  1. diferenciamos x+sin(x)log(x)\sqrt{x} + \frac{\sin{\left(x \right)}}{\log{\left(x \right)}} miembro por miembro:

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

      Ahora aplicamos la regla de la derivada de una divesión:

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

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

    Como resultado de: log(x)cos(x)sin(x)xlog(x)2+12x\frac{\log{\left(x \right)} \cos{\left(x \right)} - \frac{\sin{\left(x \right)}}{x}}{\log{\left(x \right)}^{2}} + \frac{1}{2 \sqrt{x}}

  2. Simplificamos:

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


Respuesta:

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

Gráfica
02468-8-6-4-2-1010-200100
Primera derivada [src]
   1      cos(x)     sin(x) 
------- + ------ - ---------
    ___   log(x)        2   
2*\/ x             x*log (x)
cos(x)log(x)sin(x)xlog(x)2+12x\frac{\cos{\left(x \right)}}{\log{\left(x \right)}} - \frac{\sin{\left(x \right)}}{x \log{\left(x \right)}^{2}} + \frac{1}{2 \sqrt{x}}
Segunda derivada [src]
    1      sin(x)     sin(x)      2*cos(x)    2*sin(x) 
- ------ - ------ + ---------- - --------- + ----------
     3/2   log(x)    2    2           2       2    3   
  4*x               x *log (x)   x*log (x)   x *log (x)
sin(x)log(x)2cos(x)xlog(x)2+sin(x)x2log(x)2+2sin(x)x2log(x)314x32- \frac{\sin{\left(x \right)}}{\log{\left(x \right)}} - \frac{2 \cos{\left(x \right)}}{x \log{\left(x \right)}^{2}} + \frac{\sin{\left(x \right)}}{x^{2} \log{\left(x \right)}^{2}} + \frac{2 \sin{\left(x \right)}}{x^{2} \log{\left(x \right)}^{3}} - \frac{1}{4 x^{\frac{3}{2}}}
Tercera derivada [src]
  3      cos(x)    6*sin(x)     6*sin(x)     2*sin(x)     3*sin(x)    3*cos(x)     6*cos(x) 
------ - ------ - ---------- - ---------- - ---------- + --------- + ---------- + ----------
   5/2   log(x)    3    4       3    3       3    2           2       2    2       2    3   
8*x               x *log (x)   x *log (x)   x *log (x)   x*log (x)   x *log (x)   x *log (x)
cos(x)log(x)+3sin(x)xlog(x)2+3cos(x)x2log(x)2+6cos(x)x2log(x)32sin(x)x3log(x)26sin(x)x3log(x)36sin(x)x3log(x)4+38x52- \frac{\cos{\left(x \right)}}{\log{\left(x \right)}} + \frac{3 \sin{\left(x \right)}}{x \log{\left(x \right)}^{2}} + \frac{3 \cos{\left(x \right)}}{x^{2} \log{\left(x \right)}^{2}} + \frac{6 \cos{\left(x \right)}}{x^{2} \log{\left(x \right)}^{3}} - \frac{2 \sin{\left(x \right)}}{x^{3} \log{\left(x \right)}^{2}} - \frac{6 \sin{\left(x \right)}}{x^{3} \log{\left(x \right)}^{3}} - \frac{6 \sin{\left(x \right)}}{x^{3} \log{\left(x \right)}^{4}} + \frac{3}{8 x^{\frac{5}{2}}}
Gráfico
Derivada de y=sinx/inx+x^1/2