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(-x)^(x*cos(7x))

Derivada de (-x)^(x*cos(7x))

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

Ha introducido [src]
    x*cos(7*x)
(-x)          
$$\left(- x\right)^{x \cos{\left(7 x \right)}}$$
(-x)^(x*cos(7*x))
Solución detallada
  1. No logro encontrar los pasos en la búsqueda de esta derivada.

    Perola derivada


Respuesta:

Gráfica
Primera derivada [src]
    x*cos(7*x)                                                
(-x)          *((-7*x*sin(7*x) + cos(7*x))*log(-x) + cos(7*x))
$$\left(- x\right)^{x \cos{\left(7 x \right)}} \left(\left(- 7 x \sin{\left(7 x \right)} + \cos{\left(7 x \right)}\right) \log{\left(- x \right)} + \cos{\left(7 x \right)}\right)$$
Segunda derivada [src]
    x*cos(7*x) /                                                2                -cos(7*x) + 7*x*sin(7*x)                                        \
(-x)          *|(-cos(7*x) + (-cos(7*x) + 7*x*sin(7*x))*log(-x))  - 7*sin(7*x) - ------------------------ - 7*(2*sin(7*x) + 7*x*cos(7*x))*log(-x)|
               \                                                                            x                                                    /
$$\left(- x\right)^{x \cos{\left(7 x \right)}} \left(- 7 \left(7 x \cos{\left(7 x \right)} + 2 \sin{\left(7 x \right)}\right) \log{\left(- x \right)} + \left(\left(7 x \sin{\left(7 x \right)} - \cos{\left(7 x \right)}\right) \log{\left(- x \right)} - \cos{\left(7 x \right)}\right)^{2} - 7 \sin{\left(7 x \right)} - \frac{7 x \sin{\left(7 x \right)} - \cos{\left(7 x \right)}}{x}\right)$$
Tercera derivada [src]
    x*cos(7*x) /                                                  3                 -cos(7*x) + 7*x*sin(7*x)   14*(2*sin(7*x) + 7*x*cos(7*x))                                                      /             -cos(7*x) + 7*x*sin(7*x)                                        \                                          \
(-x)          *|- (-cos(7*x) + (-cos(7*x) + 7*x*sin(7*x))*log(-x))  - 49*cos(7*x) + ------------------------ - ------------------------------ + 3*(-cos(7*x) + (-cos(7*x) + 7*x*sin(7*x))*log(-x))*|7*sin(7*x) + ------------------------ + 7*(2*sin(7*x) + 7*x*cos(7*x))*log(-x)| + 49*(-3*cos(7*x) + 7*x*sin(7*x))*log(-x)|
               |                                                                                2                            x                                                                     \                        x                                                    /                                          |
               \                                                                               x                                                                                                                                                                                                                            /
$$\left(- x\right)^{x \cos{\left(7 x \right)}} \left(49 \left(7 x \sin{\left(7 x \right)} - 3 \cos{\left(7 x \right)}\right) \log{\left(- x \right)} - \left(\left(7 x \sin{\left(7 x \right)} - \cos{\left(7 x \right)}\right) \log{\left(- x \right)} - \cos{\left(7 x \right)}\right)^{3} + 3 \left(\left(7 x \sin{\left(7 x \right)} - \cos{\left(7 x \right)}\right) \log{\left(- x \right)} - \cos{\left(7 x \right)}\right) \left(7 \left(7 x \cos{\left(7 x \right)} + 2 \sin{\left(7 x \right)}\right) \log{\left(- x \right)} + 7 \sin{\left(7 x \right)} + \frac{7 x \sin{\left(7 x \right)} - \cos{\left(7 x \right)}}{x}\right) - 49 \cos{\left(7 x \right)} - \frac{14 \left(7 x \cos{\left(7 x \right)} + 2 \sin{\left(7 x \right)}\right)}{x} + \frac{7 x \sin{\left(7 x \right)} - \cos{\left(7 x \right)}}{x^{2}}\right)$$
Gráfico
Derivada de (-x)^(x*cos(7x))