Datrys ar gyfer x, f, g (complex solution)
x=-\frac{2\pi n_{1}i}{3}+1-\ln(5)
n_{1}\in \mathrm{Z}
f=-\frac{2\pi n_{1}i}{3}+1-\ln(5)
n_{1}\in \mathrm{Z}
g\in \cup n_{1},-\frac{2\pi n_{1}i}{3}+1-\ln(5)
n_{1}\in \mathrm{Z}
Datrys ar gyfer x, f, g
g=1-\ln(5)\approx -0.609437912
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