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Derivada de y=(sinx^2)^n

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Solución

Ha introducido [src]
       n
   2    
sin (x) 
(sin2(x))n\left(\sin^{2}{\left(x \right)}\right)^{n}
(sin(x)^2)^n
Solución detallada
  1. Sustituimos u=sin2(x)u = \sin^{2}{\left(x \right)}.

  2. Según el principio, aplicamos: unu^{n} tenemos nunu\frac{n u^{n}}{u}

  3. Luego se aplica una cadena de reglas. Multiplicamos por ddxsin2(x)\frac{d}{d x} \sin^{2}{\left(x \right)}:

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

    2. Según el principio, aplicamos: u2u^{2} tenemos 2u2 u

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

      2sin(x)cos(x)2 \sin{\left(x \right)} \cos{\left(x \right)}

    Como resultado de la secuencia de reglas:

    2ncos(x)sin(x)2nsin(x)\frac{2 n \cos{\left(x \right)} \left|{\sin{\left(x \right)}}\right|^{2 n}}{\sin{\left(x \right)}}

  4. Simplificamos:

    2nsin(x)2ntan(x)\frac{2 n \left|{\sin{\left(x \right)}}\right|^{2 n}}{\tan{\left(x \right)}}


Respuesta:

2nsin(x)2ntan(x)\frac{2 n \left|{\sin{\left(x \right)}}\right|^{2 n}}{\tan{\left(x \right)}}

Primera derivada [src]
            2*n       
2*n*|sin(x)|   *cos(x)
----------------------
        sin(x)        
2ncos(x)sin(x)2nsin(x)\frac{2 n \cos{\left(x \right)} \left|{\sin{\left(x \right)}}\right|^{2 n}}{\sin{\left(x \right)}}
Segunda derivada [src]
                /        2             2                \
            2*n |     cos (x)   2*n*cos (x)*sign(sin(x))|
2*n*|sin(x)|   *|-1 - ------- + ------------------------|
                |        2          |sin(x)|*sin(x)     |
                \     sin (x)                           /
2n(2ncos2(x)sign(sin(x))sin(x)sin(x)1cos2(x)sin2(x))sin(x)2n2 n \left(\frac{2 n \cos^{2}{\left(x \right)} \operatorname{sign}{\left(\sin{\left(x \right)} \right)}}{\sin{\left(x \right)} \left|{\sin{\left(x \right)}}\right|} - 1 - \frac{\cos^{2}{\left(x \right)}}{\sin^{2}{\left(x \right)}}\right) \left|{\sin{\left(x \right)}}\right|^{2 n}
Tercera derivada [src]
                /            2                              2        2              2    2        2                  2                          2                      \       
            2*n |  1      cos (x)   3*n*sign(sin(x))   n*cos (x)*sign (sin(x))   2*n *cos (x)*sign (sin(x))   2*n*cos (x)*sign(sin(x))   2*n*cos (x)*DiracDelta(sin(x))|       
4*n*|sin(x)|   *|------ + ------- - ---------------- - ----------------------- + -------------------------- - ------------------------ + ------------------------------|*cos(x)
                |sin(x)      3          |sin(x)|                  3                          3                                2                 |sin(x)|*sin(x)        |       
                \         sin (x)                              sin (x)                    sin (x)                 |sin(x)|*sin (x)                                     /       
4n(2n2cos2(x)sign2(sin(x))sin3(x)3nsign(sin(x))sin(x)+2ncos2(x)δ(sin(x))sin(x)sin(x)2ncos2(x)sign(sin(x))sin2(x)sin(x)ncos2(x)sign2(sin(x))sin3(x)+1sin(x)+cos2(x)sin3(x))cos(x)sin(x)2n4 n \left(\frac{2 n^{2} \cos^{2}{\left(x \right)} \operatorname{sign}^{2}{\left(\sin{\left(x \right)} \right)}}{\sin^{3}{\left(x \right)}} - \frac{3 n \operatorname{sign}{\left(\sin{\left(x \right)} \right)}}{\left|{\sin{\left(x \right)}}\right|} + \frac{2 n \cos^{2}{\left(x \right)} \delta\left(\sin{\left(x \right)}\right)}{\sin{\left(x \right)} \left|{\sin{\left(x \right)}}\right|} - \frac{2 n \cos^{2}{\left(x \right)} \operatorname{sign}{\left(\sin{\left(x \right)} \right)}}{\sin^{2}{\left(x \right)} \left|{\sin{\left(x \right)}}\right|} - \frac{n \cos^{2}{\left(x \right)} \operatorname{sign}^{2}{\left(\sin{\left(x \right)} \right)}}{\sin^{3}{\left(x \right)}} + \frac{1}{\sin{\left(x \right)}} + \frac{\cos^{2}{\left(x \right)}}{\sin^{3}{\left(x \right)}}\right) \cos{\left(x \right)} \left|{\sin{\left(x \right)}}\right|^{2 n}