Подстановка условия
[src]$$\frac{\log{\left (x \right )}}{\log{\left (10 \right )}}$$
$$\frac{\log{\left ((3) \right )}}{\log{\left (10 \right )}}$$
$$\frac{\log{\left (3 \right )}}{\log{\left (10 \right )}}$$
$$\frac{\log{\left (3 \right )}}{\log{\left (10 \right )}}$$