The GDZ (Готовые домашние задания - Prepared Homework Solutions) for Aleksei Fedorovich Filippov's book, (Collection of Problems on Differential Equations), is a widely used resource for students in technical universities and mathematics departments. Online Solutions and Resources

Several platforms provide free online access to step-by-step solutions for the problems in this collection:

: Provides a similar catalog where solutions are grouped by topic, such as isoclines, separable variables, and homogeneous equations.

: Hosts downloadable files (often in DJVU or PDF format) that contain scanned versions of manually solved problems from the collection. Content of the Problem Book

: Offers a comprehensive database of solutions organized by paragraph and problem number. You can find detailed explanations for tasks ranging from basic first-order equations to complex systems.

The collection is known for its rigor and covers essential topics in differential equations, including: