Свойства логарифмов:
0, \ a \neq 1, \ b > 0)" alt="\log_{a^{p}}b = \dfrac{1}{p}\log_{a}b \ \ \ (a > 0, \ a \neq 1, \ b > 0)" align="absmiddle" class="latex-formula">
0, \ a \neq 1, \ b > 0)" alt="\log_{a}b^{p} = p\log_{a}b \ \ \ (a > 0, \ a \neq 1, \ b > 0)" align="absmiddle" class="latex-formula">
0, \ a\neq 1, \ x > 0, \ y > 0)" alt="\log_{a}(xy) = \log_{a}x + \log_{a}y \ (a>0, \ a\neq 1, \ x > 0, \ y > 0)" align="absmiddle" class="latex-formula">