Microsoft Mathematics: You can take photos, write by hand, and input by keyboard. You can solve university problems such as high numbers and line generation, and you can solve equations in primary schools and high schools. There is also the problem of analyzing the replacement of parental lines. The same advantages, clean and concise interface design.

Wolfram alpha (web version, APP version): It covers many fields, including mathematics, science, society and daily life. Under each category, there are corresponding subcategories. A new generation of knowledge engine, what you ask him, he can give you the answer directly.

Symbolab-Math solver (web version, APP version): provides calculators for elementary algebra, algebra, calculus, trigonometric functions, functions and graphs, matrices and vectors, and also supports algorithms for quickly searching algebra, derivatives, integrals, limits and trigonometric functions.

What is calculus? Yes, it's the name of an APP, which strongly expresses students' anger. Software developers are freshmen. This APP has a simple interface, but powerful arithmetic functions, such as calculus, derivative, limit and indefinite integral. The speed of solving problems is also very fast. Click "=" to give the answer immediately.