: Platforms like 11klasov.net offer the 2015/2016 editions in PDF format for free.

: The official electronic version is available through the Prosveshcheniye Mediateka platform. This requires the "Lecta" or "Prosveshcheniye" app for Android to view content offline.

: Many educational institutions host the full PDF for student use. You can download the complete textbook from sites like school20yola.ru or ebooks.znu.edu.ua .