Persiapan Ulangan 2

Menyelesaikan persamaan

\begin{equation*} \begin{split} ^3 \log \{^2 \log [1 + \: ^2 \log (x - 1)]\} &= 0\\\\ \cancel{^3 \log} \{^2 \log [1 + \: ^2 \log (x - 1)]\} &= \cancel{^3 \log} 1\\\\ ^2 \log [1 + \: ^2 \log (x - 1)] &= 1\\\\ \cancel{^2 \log} [1 + \: ^2 \log (x - 1)] &= \cancel{^2 \log} 2\\\\ 1 + \: ^2 \log (x - 1) &= 2\\\\ ^2 \log (x - 1) &= 1\\\\ \cancel{^2 \log} (x - 1) &= \cancel{^2 \log} 2\\\\ x - 1 &= 2\\\\ x &= 3 \end{split} \end{equation*}