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f*z=i*(12*x*y+3)+6*(x^2+1)-6*(y^2-1) la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
                         / 2    \     / 2    \
f*z = I*(12*x*y + 3) + 6*\x  + 1/ - 6*\y  - 1/
$$f z = - 6 \left(y^{2} - 1\right) + \left(6 \left(x^{2} + 1\right) + i \left(12 x y + 3\right)\right)$$
Solución detallada
Transportemos el miembro derecho de la ecuación al
miembro izquierdo de la ecuación con el signo negativo.

La ecuación se convierte de
$$f z = - 6 \left(y^{2} - 1\right) + \left(6 \left(x^{2} + 1\right) + i \left(12 x y + 3\right)\right)$$
en
$$f z + \left(6 \left(y^{2} - 1\right) + \left(- 6 \left(x^{2} + 1\right) - i \left(12 x y + 3\right)\right)\right) = 0$$
Abramos la expresión en la ecuación
$$f z + \left(6 \left(y^{2} - 1\right) + \left(- 6 \left(x^{2} + 1\right) - i \left(12 x y + 3\right)\right)\right) = 0$$
Obtenemos la ecuación cuadrática
$$f z - 6 x^{2} - 12 i x y + 6 y^{2} - 12 - 3 i = 0$$
Es la ecuación de la forma
a*x^2 + b*x + c = 0

La ecuación cuadrática puede ser resuelta
con la ayuda del discriminante.
Las raíces de la ecuación cuadrática:
$$x_{1} = \frac{\sqrt{D} - b}{2 a}$$
$$x_{2} = \frac{- \sqrt{D} - b}{2 a}$$
donde D = b^2 - 4*a*c es el discriminante.
Como
$$a = -6$$
$$b = - 12 i y$$
$$c = f z + 6 y^{2} - 12 - 3 i$$
, entonces
D = b^2 - 4 * a * c = 

(-12*i*y)^2 - 4 * (-6) * (-12 - 3*i + 6*y^2 + f*z) = -288 - 72*i + 24*f*z

La ecuación tiene dos raíces.
x1 = (-b + sqrt(D)) / (2*a)

x2 = (-b - sqrt(D)) / (2*a)

o
$$x_{1} = - i y - \frac{\sqrt{24 f z - 288 - 72 i}}{12}$$
$$x_{2} = - i y + \frac{\sqrt{24 f z - 288 - 72 i}}{12}$$
Gráfica
Respuesta rápida [src]
       /            _________________________________________                                             \      _________________________________________                                                     
       |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|   4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\        
       |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||   \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *cos|---------------------------------------|        
       |                                                         \                   2                   /|                                                   \                   2                   /        
x1 = I*|-re(y) - -----------------------------------------------------------------------------------------| - ----------------------------------------------------------------------------------------- + im(y)
       \                                                     6                                            /                                               6                                                    
$$x_{1} = i \left(- \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) - \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} + \operatorname{im}{\left(y\right)}$$
       /            _________________________________________                                             \      _________________________________________                                                     
       |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|   4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\        
       |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||   \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *cos|---------------------------------------|        
       |                                                         \                   2                   /|                                                   \                   2                   /        
x2 = I*|-re(y) + -----------------------------------------------------------------------------------------| + ----------------------------------------------------------------------------------------- + im(y)
       \                                                     6                                            /                                               6                                                    
$$x_{2} = i \left(\frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) + \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} + \operatorname{im}{\left(y\right)}$$
x2 = i*(((6*re(f*z) - 72)^2 + (6*im(f*z) - 18)^2)^(1/4)*sin(atan2(6*im(f*z - 18, 6*re(f*z) - 72)/2)/6 - re(y)) + ((6*re(f*z) - 72)^2 + (6*im(f*z) - 18)^2)^(1/4)*cos(atan2(6*im(f*z) - 18, 6*re(f*z) - 72)/2)/6 + im(y))
Suma y producto de raíces [src]
suma
  /            _________________________________________                                             \      _________________________________________                                                          /            _________________________________________                                             \      _________________________________________                                                     
  |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|   4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\             |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|   4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\        
  |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||   \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *cos|---------------------------------------|             |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||   \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *cos|---------------------------------------|        
  |                                                         \                   2                   /|                                                   \                   2                   /             |                                                         \                   2                   /|                                                   \                   2                   /        
I*|-re(y) - -----------------------------------------------------------------------------------------| - ----------------------------------------------------------------------------------------- + im(y) + I*|-re(y) + -----------------------------------------------------------------------------------------| + ----------------------------------------------------------------------------------------- + im(y)
  \                                                     6                                            /                                               6                                                         \                                                     6                                            /                                               6                                                    
$$\left(i \left(- \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) - \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} + \operatorname{im}{\left(y\right)}\right) + \left(i \left(\frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) + \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} + \operatorname{im}{\left(y\right)}\right)$$
=
            /            _________________________________________                                             \     /            _________________________________________                                             \
            |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|     |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|
            |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||     |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||
            |                                                         \                   2                   /|     |                                                         \                   2                   /|
2*im(y) + I*|-re(y) - -----------------------------------------------------------------------------------------| + I*|-re(y) + -----------------------------------------------------------------------------------------|
            \                                                     6                                            /     \                                                     6                                            /
$$i \left(- \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) + i \left(\frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) + 2 \operatorname{im}{\left(y\right)}$$
producto
/  /            _________________________________________                                             \      _________________________________________                                                     \ /  /            _________________________________________                                             \      _________________________________________                                                     \
|  |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|   4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\        | |  |         4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\|   4 /                  2                    2     /atan2(-18 + 6*im(f*z), -72 + 6*re(f*z))\        |
|  |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||   \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *cos|---------------------------------------|        | |  |         \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *sin|---------------------------------------||   \/  (-72 + 6*re(f*z))  + (-18 + 6*im(f*z))  *cos|---------------------------------------|        |
|  |                                                         \                   2                   /|                                                   \                   2                   /        | |  |                                                         \                   2                   /|                                                   \                   2                   /        |
|I*|-re(y) - -----------------------------------------------------------------------------------------| - ----------------------------------------------------------------------------------------- + im(y)|*|I*|-re(y) + -----------------------------------------------------------------------------------------| + ----------------------------------------------------------------------------------------- + im(y)|
\  \                                                     6                                            /                                               6                                                    / \  \                                                     6                                            /                                               6                                                    /
$$\left(i \left(- \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) - \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} + \operatorname{im}{\left(y\right)}\right) \left(i \left(\frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \sin{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} - \operatorname{re}{\left(y\right)}\right) + \frac{\sqrt[4]{\left(6 \operatorname{re}{\left(f z\right)} - 72\right)^{2} + \left(6 \operatorname{im}{\left(f z\right)} - 18\right)^{2}} \cos{\left(\frac{\operatorname{atan_{2}}{\left(6 \operatorname{im}{\left(f z\right)} - 18,6 \operatorname{re}{\left(f z\right)} - 72 \right)}}{2} \right)}}{6} + \operatorname{im}{\left(y\right)}\right)$$
=
      2      I     2      re(f*z)   I*im(f*z)                  
2 + im (y) + - - re (y) - ------- - --------- - 2*I*im(y)*re(y)
             2               6          6                      
$$- \left(\operatorname{re}{\left(y\right)}\right)^{2} - 2 i \operatorname{re}{\left(y\right)} \operatorname{im}{\left(y\right)} - \frac{\operatorname{re}{\left(f z\right)}}{6} + \left(\operatorname{im}{\left(y\right)}\right)^{2} - \frac{i \operatorname{im}{\left(f z\right)}}{6} + 2 + \frac{i}{2}$$
2 + im(y)^2 + i/2 - re(y)^2 - re(f*z)/6 - i*im(f*z)/6 - 2*i*im(y)*re(y)