It contains the answers to the after-school exercises of all college courses, not only the answers to textbooks, but also the answers to online courses. There are also many classifications, which basically cover all university disciplines. As long as you click on a subject classification, you can see all the textbook answers under that subject.

2. Learning is small and easy.

This APP can directly input questions to search, and can also search for voice search and photos. You can also search test papers and real questions for exam training. Moreover, its test paper not only has big topics, but also qualification questions and software technology questions.

3. Symbol laboratory

An APP that focuses on solving the problem of high numbers. Can solve calculus, function, matrix, geometry and other complex problems with high numbers. There will be many small categories under each category.

4. Volfram Alpha

It covers many fields, including mathematics, science, society and daily life. Under each category, there are corresponding subcategories. Directly into the topic, you can search, and give the corresponding problem-solving process and corresponding geometry.

5. Search for the title.

An intelligent search software based on image search technology and voice search technology is practiced for all kinds of primary and secondary schools, universities, textual research test groups and a large number of question banks. Support voice search, photo search, low pixel requirements, only one shot can be accurately identified.