Sr Examen

Derivada de y=7^xsinx

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

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Solución

Ha introducido [src]
 x       
7 *sin(x)
7xsin(x)7^{x} \sin{\left(x \right)}
7^x*sin(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)=7xf{\left(x \right)} = 7^{x}; calculamos ddxf(x)\frac{d}{d x} f{\left(x \right)}:

    1. ddx7x=7xlog(7)\frac{d}{d x} 7^{x} = 7^{x} \log{\left(7 \right)}

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

    Como resultado de: 7xlog(7)sin(x)+7xcos(x)7^{x} \log{\left(7 \right)} \sin{\left(x \right)} + 7^{x} \cos{\left(x \right)}

  2. Simplificamos:

    7x(log(7)sin(x)+cos(x))7^{x} \left(\log{\left(7 \right)} \sin{\left(x \right)} + \cos{\left(x \right)}\right)


Respuesta:

7x(log(7)sin(x)+cos(x))7^{x} \left(\log{\left(7 \right)} \sin{\left(x \right)} + \cos{\left(x \right)}\right)

Gráfica
02468-8-6-4-2-1010-1000000000500000000
Primera derivada [src]
 x           x              
7 *cos(x) + 7 *log(7)*sin(x)
7xlog(7)sin(x)+7xcos(x)7^{x} \log{\left(7 \right)} \sin{\left(x \right)} + 7^{x} \cos{\left(x \right)}
Segunda derivada [src]
 x /             2                            \
7 *\-sin(x) + log (7)*sin(x) + 2*cos(x)*log(7)/
7x(sin(x)+log(7)2sin(x)+2log(7)cos(x))7^{x} \left(- \sin{\left(x \right)} + \log{\left(7 \right)}^{2} \sin{\left(x \right)} + 2 \log{\left(7 \right)} \cos{\left(x \right)}\right)
Tercera derivada [src]
 x /             3                                    2          \
7 *\-cos(x) + log (7)*sin(x) - 3*log(7)*sin(x) + 3*log (7)*cos(x)/
7x(3log(7)sin(x)+log(7)3sin(x)cos(x)+3log(7)2cos(x))7^{x} \left(- 3 \log{\left(7 \right)} \sin{\left(x \right)} + \log{\left(7 \right)}^{3} \sin{\left(x \right)} - \cos{\left(x \right)} + 3 \log{\left(7 \right)}^{2} \cos{\left(x \right)}\right)
Gráfico
Derivada de y=7^xsinx