Формула:
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0, \\ b>0 " alt="log_{a ^{k}}b ^{n}= \frac{n}{k}log_ab, \\ a>0, \\ b>0 " align="absmiddle" class="latex-formula">
поэтому
Формула логарифма степени:
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0, \\ b>0 " alt="log_ab ^{n}=nlog_ab, \\ a>0, \\ b>0 " align="absmiddle" class="latex-formula">
Итак,