2. Elective chapters 2-2 are as follows:

Chapter 1 Derivative and Its Application

Chapter II Reasoning and Proof

Chapter 3: The extension of number system and the introduction of complex numbers.

3. The first chapter mainly introduces the concept of derivative, the function of derivative in function learning, the basic theorem of calculus and so on.

The second chapter mainly introduces reasonable reasoning, deductive reasoning and various proof methods such as analysis, synthesis, reduction to absurdity and mathematical induction.

The third chapter mainly introduces the concept and operation of complex numbers.