Solve for K
K=\log_{c_{n}}\left(18\right)
c_{n}\neq 1\text{ and }c_{n}>0
Solve for c_n
\left\{\begin{matrix}c_{n}=-18^{\frac{1}{K}}\text{, }&K\neq 0\text{ and }Numerator(K)\text{bmod}2=0\text{ and }Denominator(K)\text{bmod}2=1\\c_{n}=18^{\frac{1}{K}}\text{, }&K\neq 0\end{matrix}\right.
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