mathematichka.ru

Mathematichka RU - online mathematics assistant for schoolchildren and students

Welcome to the mathematichka website. ruis a place where mathematics ceases to be scary and becomes almost pleasant. Yes, yes, that's right. Here, even those who think that they are bad at mathematics can find support. The site was created as an online resource for preparing for exams: the Unified State Exam, the Unified State Exam, and indeed any tests that require knowledge of formulas and an understanding of processes.

The main idea is simple: to understand means to get used to it and learn to use it. This is a Feynman quote, but it captures the essence of the entire project. Not just learn it, but feel it. It’s as if you’ve been familiar with this material for a long time, although you’re just starting out. This feeling does not come immediately, but it happens. Especially when there is a good guide.

What can you find here?

• Preparation for the OGE 2025:Basic level demo version with detailed solutions and comments. True, there is no full version of the profile level yet - but it is already in the works.
• USE 2025 (profile level):Tasks with short answers and expanded ones. It seems that everything is in a new format, but the changes are minimal - demo versions were approved in October 2024, and there are no differences from the projects. No surprises, just honest work.
• For schoolchildren:We learn formulas, remember the meanings. There is even an Oral Account - based on a painting by Bogdanov-Belsky. Yes, for a reason. This is a metaphor that mathematics lives not only in textbooks, but also in culture.
• Linear algebra for students:Matrices, determinants, systems of linear equations. And yes, there are examples from economics - how to use matrices in practice. Interesting? Certainly. But the main thing is to understand.
• Higher mathematics:Derivatives, integrals, differential equations. And also random variables and their characteristics. Typical mistakes when calculating the derivative - why many people lose points. The site shows them, explains them, and helps not to repeat them.
• Functions and graphs:Elementary functions with all formulas. How to build graphs, how to convert. Quadratic function y ax² + bx + c - its properties, vertex, axis of symmetry. All this is described, but without intrusiveness.
• Combinatorics and probability theory:Formulas of permutations, placements, combinations. Simple problems with solutions. Errors when adding and multiplying probabilities are common, and the site sorts them out.

What else is interesting?

One of the coolest moments is a question for filling. He is not just a mystery: the hunter walked 10 km to the south, then 10 km to the east, killed a bear and returned 10 km to the north - straight to the tent. What color was the bear? The answer is simple, but only if you remember geography and a little math.And yes, it is white - because such a path is only possible near the North Pole. Amazing, right?

There is also a section for those who want to support the project. The Arithmetic of Good charity foundation helps orphans through online education. The Chance program is the largest distance learning program. If you like the content, you can participate. Not necessarily with money - maybe just tell your friends.

And one more important note: copying materials is prohibited!Especially for those who simply copy the text, breaking formulas, omitting drawings. This behavior does not help students - it hinders them. And I remind you: the VKontakte group under the nickname Mathematica. ru is fake. There is only one real site.

News and updates

• November 10, 2024:Demonstration versions of the Unified State Exam 2025 and the Unified State Exam 2025 have been approved. There are no differences from projects. Successful preparation!
• September 17, 2024:The commentary on the preparation for the Demo version of the OGE 2025 has been updated.
• September 3, 2024:The page of tasks for the first part of the profile level has been brought into line with the new format. You can use examples.

The site is being actively edited. Sometimes links don't work - sorry. But if you notice a mistake, please report it. Via email or the envelope on the left. Help me do better.

• equiv: Content-Type content: text/html; charset=utf-8
• name: viewport content: width=device-width, initial-scale=1.0
• name: description content: Online-помощник для подготовки к экзаменам по математике от Математички. Школьникам, студентам, ОГЭ, ЕГЭ, олимпиады, сессии.

• https://mathematichka.ru/school/riddle/sq3x3.html
• http://mathematichka.ru/javascript:void(0)
• https://vk.com/share.php?url=https%3A%2F%2Fmathematichka.ru%2F&title=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3&utm_source=share2
• https://connect.ok.ru/offer?url=https%3A%2F%2Fmathematichka.ru%2F&title=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3&utm_source=share2
• https://t.me/share/url?url=https%3A%2F%2Fmathematichka.ru%2F&text=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3&utm_source=share2
• https://www.livejournal.com/update.bml?subject=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3&event=https%3A%2F%2Fmathematichka.ru%2F&utm_source=share2
• https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fmathematichka.ru%2F&title=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3&utm_source=share2
• http://mathematichka.ru/javascript:void(0);
• https://twitter.com/intent/tweet?text=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3&url=https%3A%2F%2Fmathematichka.ru%2F&utm_source=share2
• https://api.whatsapp.com/send?text=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3%20https%3A%2F%2Fmathematichka.ru%2F&utm_source=share2
• http://mathematichka.ru/viber://forward?text=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3%20https%3A%2F%2Fmathematichka.ru%2F&utm_source=share2
• https://yandex.ru/chat?text=%D0%9C%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BA%D0%B0%20%D0%A0%D0%A3%0Ahttps%3A%2F%2Fmathematichka.ru%2F&utm_source=share2#/forward
• Учим формулы
• Запоминаем значения
• Важная единица
• "Устный счет" (по картине Богданова-Бельского)
• Элементы геометрии
• И многое другое...
• Демонстрационного варианта ОГЭ 2026 по математике.
• ЕГЭ базового уровня по математике. Проект демоверсии 2026
• Задачи ЕГЭ 2026 профильного уровня с кратким ответом
• Задачи ЕГЭ 2026 профильного уровня с развёрнутым ответом
• Варианты прошлых лет
• Использование понятия матрицы в экономике. Операции над матрицами.
• Определители квадратных матриц.
• Решение систем линейных уравнений.
• Исследовать на совместность систему линейных уравнений
• Векторное пространство. Операции над векторами.
• Собственные векторы и собственные значения линейного оператора.
• Приложение производной: интервалы монотонности и экстремумы функции.
• Типичные ошибки при вычислении производной.
• Исследование дробно-рациональной функции.
• Приложения определенного интеграла.
• Дифференциальные уравнения (основные понятия).
• Случайные величины: числовые характеристики распределения.
• Совмещенная таблица производных и первообразных.
• Свойства первого дифференциала функции.
• Неопределенный интеграл. Вычисление.
• Таблица элементарных функций с формулами и графиками.
• Преобразования графиков функций
• Свойства и график линейной функции   
• Свойства и график квадратичной функции   
• Формулы комбинаторики: перестановки, размещения, сочетания.
• Простые задачи с решениями.
• Типовые ошибки при использовании классического определения вероятностей.
• Ошибки при решении задач на правила сложения и умножения вероятностей событий.
• Тесты и тренажёры.
• Элементы GMAT math in Russian
• https://mathematichka.ru/mail_toMe/letter_form.html
• http://mathematichka.ru/Answers.html
• как поддержать сайт
• http://mathematichka.ru/#last_updates
• Карте сайта.
• представлен здесь
• решения заданий первой части
• к разбору заданий.
• задач про автомобильные шины.
• Площади плоских фигур
• по оглавлению
• формулам тригонометрии
• Посмотреть моё решение

• "Арифметика добра"
• https://a-dobra.ru/programs/shans/
• Математичка РУ
• yoomoney.ru/to/410012388573332
• https://metrika.yandex.ru/stat/?id=18770479&from=informer

            domain:        MATHEMATICHKA.RU
nserver:       ns1.rsnx.ru.
nserver:       ns2.rsnx.ru.
state:         REGISTERED, DELEGATED, UNVERIFIED
person:        Private Person
registrar:     RU-CENTER-RU
admin-contact: https://www.nic.ru/whois
created:       2012-11-12T08:53:31Z
paid-till:     2026-11-12T09:53:31Z
free-date:     2026-12-13
source:        TCI
Last updated on 2026-06-08T17:03:01Z
        

			User-Agent: *
Allow: /
Disallow: /other
Allow: /other/cookery
Disallow: /homework
Disallow: /my_students
Disallow: /ege/test_baz_closed
Host: mathematichka.ru
Sitemap: https://www.mathematichka.ru/sitemap.xml        

Technical SEO

On-Page SEO

Content and UX