Усложним, чтобы стало легче ➜ 7sinx=sin7x ➜ Для гурманов тригонометрии
Решите уравнение ➜ 7sinx=sin7x.
Предыдущее видео:
Valery Volkov
@arinablog наш семейный канал
Почта: uroki64@
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