Олимпиада межвед-2023. Разбор олимпиады межвед-2022.
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Курсы по олимпиадной математике 👉🏻https://2.shkolkovo.online/olymp-math?utm_source=youtube Материалы: https://1.shkolkovo.online/st/6/o/mezhved-2022__11093.pdf?sign=M0DvwnN%2BCm8lLpaipYZMVc0h%2FP7QNucRXRsZ%2B2liY3Rj%2BDMUM0lwL2v60A%3D%3D 🎯 Крути рулетку и получи дополнительную скидку на курсы 👉🏻https://2.shkolkovo.online/fortune?olymp=1?utm_source=youtube Все наши текущие акции и скидки👉🏻 https://2.shkolkovo.online/special?utm_source=youtube Отзывы наших учеников👉🏻 https://2.shkolkovo.online/reviews?utm_source=youtube Все наши каналы на Ютубе: ✔️ Физика с АВ: https://shkolkovo.info/yt2 ✔️ Информатика с АР: https://shkolkovo.info/yt3 ✔️ Подготовка к ОГЭ ко всем предметам: https://shkolkovo.info/yt4 ✔️ Обществознание с МВ, история с АВ, английский с СС: https://shkolkovo.info/yt5 ✔️ Биология с ЕВ: https://shkolkovo.info/yt6 ✔️ Биология и химия Мутаген: https://shkolkovo.info/yt7 ✔️ Обществознание и история Histructor: https://shkolkovo.info/yt8 ✔️ Изи-ЕГЭ Математика с Али: https://shkolkovo.info/yt9 ✔️Математика с МО и русский язык с ТА (Основной канал Школково): https://shkolkovo.info/yt10 ✔️Максим Коваль. Влог учителя математики: https://shkolkovo.info/yt11 ✔️Экономика. Школково Олимпиады: https://shkolkovo.info/yt12 ✔️ИЗИ-физика с ГК: https://shkolkovo.info/yt13 Тайм-коды! 0:00 Межвед – олимпиада с ооочень разными задачами: и техника, и классика, и межнар! 2:54 Задача 1. Игрушка! Решение №1. Вписываем цифры в 101 клетку! Анализ с конца и то, какой остаток мы должны обеспечить на нечётных шагах! 15:17 Решение №2. Стратегия дополнения! Явно строим сопоставление цифр, чтобы в сумме получился остаток 9! 24:27 Задача 2. Количество цифр в десятичной записи 2^100, если в 2^200 61 цифра! Оценка на ≤ 30 знаков и на ≥ 32 знака! Зажимаем между степенями 10! 35:34 Задача 3. Сократить дробь из многочленов = найти НОД многочленов! Алгоритм Евклида поиска НОДа и деление многочлена на многочлен! 55:57 Задача 4. Тригонометрическое уравнение! Косинус тройного угла и уравнение 5-ой степени на косинус! Красивое док-во положительности скобки по неравенству о средних! 1:07:30 Задача 5. Геометрия помогает алгебре! Система из трёх уравнений = три теоремы косинусов в треугольниках с общими сторонами! Убийство Героном! 1:21:02 Задача 7. Числа, полученное записью идущих подряд убывающих чисел! Интересный факт про числа из одних единиц и похожая идея! 1:35:35 Итоги веба. Какая олимпиада будет в следующий раз? + про интенсив к муниципальному этапу!
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