IOM 2021, Блиц — Задача 19

The Blitz-contest of IOM-2021

Условие

Solve the equation $\log_7(x) + 2\log_{49}(x) = \log_{1/7}(9)$.

If the answer is a fraction, it can be entered either as a decimal fraction or as a ratio “$r/s$”. Rounding is not allowed.
If there are multiple answers, they should be entered each in its own field; add more fields with the “+” button.

Отговори

Решение

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Оригинал в Архива: iom-2021-blitz-tasks-eng.pdf · официални решения: iom-2021-blitz-answers-eng.pdf