Sr Examen

Otras calculadoras

sin(p*x/4)=-sqrt(2)/2 la ecuación

El profesor se sorprenderá mucho al ver tu solución correcta😉

v

Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
              ___ 
   /p*x\   -\/ 2  
sin|---| = -------
   \ 4 /      2   
$$\sin{\left(\frac{p x}{4} \right)} = \frac{\left(-1\right) \sqrt{2}}{2}$$
Solución detallada
Tenemos la ecuación
$$\sin{\left(\frac{p x}{4} \right)} = \frac{\left(-1\right) \sqrt{2}}{2}$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$\frac{p x}{4} = 2 \pi n + \operatorname{asin}{\left(- \frac{\sqrt{2}}{2} \right)}$$
$$\frac{p x}{4} = 2 \pi n - \operatorname{asin}{\left(- \frac{\sqrt{2}}{2} \right)} + \pi$$
O
$$\frac{p x}{4} = 2 \pi n - \frac{\pi}{4}$$
$$\frac{p x}{4} = 2 \pi n + \frac{5 \pi}{4}$$
, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
$$\frac{p}{4}$$
obtenemos la respuesta:
$$x_{1} = \frac{4 \left(2 \pi n - \frac{\pi}{4}\right)}{p}$$
$$x_{2} = \frac{4 \left(2 \pi n + \frac{5 \pi}{4}\right)}{p}$$
Gráfica
Respuesta rápida [src]
           pi*re(p)         pi*I*im(p)  
x1 = - --------------- + ---------------
         2        2        2        2   
       im (p) + re (p)   im (p) + re (p)
$$x_{1} = - \frac{\pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} + \frac{i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}$$
        5*pi*re(p)       5*pi*I*im(p) 
x2 = --------------- - ---------------
       2        2        2        2   
     im (p) + re (p)   im (p) + re (p)
$$x_{2} = \frac{5 \pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} - \frac{5 i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}$$
x2 = 5*pi*re(p)/(re(p)^2 + im(p)^2) - 5*i*pi*im(p)/(re(p)^2 + im(p)^2)
Suma y producto de raíces [src]
suma
      pi*re(p)         pi*I*im(p)        5*pi*re(p)       5*pi*I*im(p) 
- --------------- + --------------- + --------------- - ---------------
    2        2        2        2        2        2        2        2   
  im (p) + re (p)   im (p) + re (p)   im (p) + re (p)   im (p) + re (p)
$$\left(- \frac{\pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} + \frac{i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}\right) + \left(\frac{5 \pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} - \frac{5 i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}\right)$$
=
   4*pi*re(p)       4*pi*I*im(p) 
--------------- - ---------------
  2        2        2        2   
im (p) + re (p)   im (p) + re (p)
$$\frac{4 \pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} - \frac{4 i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}$$
producto
/      pi*re(p)         pi*I*im(p)  \ /   5*pi*re(p)       5*pi*I*im(p) \
|- --------------- + ---------------|*|--------------- - ---------------|
|    2        2        2        2   | |  2        2        2        2   |
\  im (p) + re (p)   im (p) + re (p)/ \im (p) + re (p)   im (p) + re (p)/
$$\left(- \frac{\pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} + \frac{i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}\right) \left(\frac{5 \pi \operatorname{re}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}} - \frac{5 i \pi \operatorname{im}{\left(p\right)}}{\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}}\right)$$
=
     2                   2
-5*pi *(-I*im(p) + re(p)) 
--------------------------
                     2    
    /  2        2   \     
    \im (p) + re (p)/     
$$- \frac{5 \pi^{2} \left(\operatorname{re}{\left(p\right)} - i \operatorname{im}{\left(p\right)}\right)^{2}}{\left(\left(\operatorname{re}{\left(p\right)}\right)^{2} + \left(\operatorname{im}{\left(p\right)}\right)^{2}\right)^{2}}$$
-5*pi^2*(-i*im(p) + re(p))^2/(im(p)^2 + re(p)^2)^2