The national college students' mathematics competition takes differential equation as the test. The main questions are function, limit and continuity, then the differential of univariate function, then the integral of univariate function, and then the ordinary differential equation, that is, the differential equation just mentioned.

Then there are analytic geometry of vector and space, differential calculus of multivariate functions and so on.

Most of the above exhibits are non-mathematical competition questions. If you ask questions in a math contest, there will be a topic of mathematical analysis. In higher algebra, there will be polynomials, multivariate polynomials, symmetric polynomials, and Vieta's theorem. This is the outline of the competition topics of the college students' mathematics competition. The final conclusion is that college students will take the differential equation in the mathematics competition.