Open class help is a free university search software! Total * * * has gathered more than 40 million questions and answers, and it is still being continuously updated. Collect accounting, computer, medicine, qualification, education, foreign languages, engineering, architecture and other subjects that most students need in a four-year university.

2, coconut has a problem:

There are answers to all kinds of college textbooks, online courses for college students, various textual research and exam question banks. The answer base and answer base of the super-whole-network course are updated every day.

3. Photo matching:

A software for learning mathematics by taking photos with a mobile phone, which supports derivatives and integrals of fractions, decimals, roots, algebraic expressions, linear equations, inequalities, quadratic equations or inequalities in one variable, linear equations and inequalities in one variable, equations, logarithms, trigonometric functions, exponential functions and logarithmic functions.

4, sparrow question bank:

It can help college students solve the problems of undergraduate and graduate homework exams. It uses AI technologies such as semantic analysis and deep learning algorithm to help senior students turn their professional knowledge and experience into economic value, thus solving academic and work problems for college students. Support photo search.

5, palm reading question bank:

It covers a large number of questions and answers, including mock exams, real questions over the years, daily exercises and so on. You can also practice according to the test center, redo wrong questions, support text, voice input and picture input, and cover a wide range of topics, including hot topics such as architects and self-taught exams.