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Homework Statement
I am trying to solving the following complex equation for [tex]x[/tex] and [tex]\theta[/tex]
[tex]a\sinh(2x) e^{-i\theta} + y\sinh^2x e^{-i2\theta} + y^*\cosh^2(x) = 0[/tex]
where [tex]a[/tex] is real constant, [tex]x[/tex] and [tex]\theta[/tex] are also real parameter. [tex]y[/tex] is complex number, [tex]y^*[/tex] is the complex conjugate.
Solve for [tex]x[/tex] and [tex]\theta[/tex] (in terms of y and a)
2. The attempt at a solution
Let
[tex]y = |y| e^{i\varphi}[/tex]
and multiply the equation with [tex]y[/tex]
[tex]ay\sinh(2x) e^{-i\theta} + y^2\sinh^2x e^{-i2\theta} + |y|^2\cosh^2(x) = 0[/tex]
Now let the real part and imaginary part equals ZERO.
[tex]
\begin{cases}
a\sinh(2x) |y|\cos(\theta-\varphi) + |y|^2\sinh^2(x)\cos(2\theta-2\varphi) + |y|^2\alpha^2 = 0, \\[3.8mm]
a\sinh(2x) |y|\sin(\theta-\varphi) + |y|^2\sinh^2(x)\sin(2\theta-2\varphi) = 0
\end{cases}
[/tex]
I tryied to solve that two days ago, I tried many way to simpliy that but still find no way to get the soluton. Could anyone give me some hints?
Thanks
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