Chapter one, sequence.

1, the concept of sequence

2. Functional characteristics of sequences

3. Arithmetic series

4. The top n sums of arithmetic progression.

5. Equal ratio series

6. The first n sums of geometric series.

7. Application of sequence in daily economic life

Chapter two, triangle solution.

1, sine theorem and cosine theorem sine theorem

2. Sine theorem

3. Cosine theorem

4. Geometric calculation of triangle

5. Examples of practical applications of triangular solutions.

Chapter III Inequality

1, inequality relation

1. 1, inequality relation

1.2, relative size

2. Unary quadratic inequality

2. 1, the solution of the unary quadratic inequality

2.2, the application of a quadratic inequality

3. Basic inequality

3. 1 basic inequality

3.2. Basic Inequalities and Maximum (Minimum) Values

4 linear programming

4. 1, binary linear inequality (group) and plane area

4.2, simple linear programming

4.3, the application of simple linear programming