These elective materials are divided into several exhibitions:

1, elective 2- 1: Chapter 1 "Common logical terms"; Chapter 2 "Conic Curve and Equation"; Chapter 3: Space vector and solid geometry.

2. Elective course 2-2: Chapter 1 "Derivative and Its Application"; Chapter two: reasoning and proof; The third chapter is the expansion of number system and the introduction of complex numbers.

3. Elective course 4- 1: Lecture 1 "similar triangles's Judgment and Its Related Nature"; The second lecture is "the positional relationship between straight line and circle"; Lecture 3 "Discussion on the Properties of Conic Curves".

4. Elective Course 4-5: Lecture 1 "Inequality and Absolute Inequality"; The second lecture is "the basic method of explaining inequality"; The third lecture "Cauchy inequality and rank inequality"; Lecture 4 "Mathematical induction to prove inequality".

Extended data:

Compared with the 20 18 college entrance examination questions, the objective questions of the 20 19 Henan college entrance examination mathematics volume have not changed much, which highlights the examination of mathematics culture.

Among the subjective questions of science mathematics test questions, 1 continues to examine and solve triangles, and compares the basics. The second question is the same as last year. It is quite difficult to examine the knowledge of solid geometry. The third question, like last year, examines the conventional problem of parabola in conic curve. Question 4 is different from last year. It is difficult to investigate the extreme point and zero point in the derivative in the form of proof. Question 5 is different from last year. It is obviously more difficult and comprehensive to investigate the problems of probability statistics and sequence synthesis.

Big river. Com- Zheng Waiming 20 19 Comments on Mathematics in Henan College Entrance Examination: Focus on students' application ability, mathematics literacy and learning potential.