Hello,
[tex]log_q(4)= \frac{2}{3} \\\\
==\textgreater \ q^{log_q(4)}=q^\frac{2}{3} \\
==\textgreater \ 4=q^\frac{2}{3} \\
==\textgreater \ 2^2=q^\frac{2}{3} \\
==\textgreater \ q^\frac{1}{3}=2 \\
==\textgreater \ q=2^3 \\
==\textgreater \ q=8 \\
[/tex]
