Gjej x (complex solution)
x=-i\ln(\frac{\left(-1-i\right)\sqrt{y^{2}-8}+\left(1+i\right)y}{4})+2\pi n_{1}\text{, }n_{1}\in \mathrm{Z}
x=-i\ln(\left(\frac{1}{4}+\frac{1}{4}i\right)\left(\sqrt{y^{2}-8}+y\right))+2\pi n_{2}\text{, }n_{2}\in \mathrm{Z}
Gjej y (complex solution)
y=\left(1-i\right)e^{ix}+\left(1+i\right)e^{-ix}
Gjej y
y=2\left(\sin(x)+\cos(x)\right)
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