Ebatzi: x (complex solution)
x=-i\ln(\left(\frac{3}{25}-\frac{4}{25}i\right)\left(\sqrt{y^{2}-25}+y\right))+2\pi n_{1}\text{, }n_{1}\in \mathrm{Z}
x=-i\ln(\frac{\left(-3+4i\right)\sqrt{y^{2}-25}+\left(3-4i\right)y}{25})+2\pi n_{2}\text{, }n_{2}\in \mathrm{Z}
Ebatzi: y (complex solution)
y=\left(\frac{3}{2}+2i\right)e^{ix}+\left(\frac{3}{2}-2i\right)e^{-ix}
Ebatzi: y
y=3\cos(x)-4\sin(x)
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