Basic theory

Limits of binary functions

continuous

Higher order partial derivatives, partial derivatives

Quanwei

Calculation rules for partial derivatives of composite functions

Calculation of partial derivative functions of implicit functions

unconditional extreme value

conditional extreme value

Convert to the maximum value of a one-variable function

Lagrange multiplier method

1. Limits of multivariate functions

2. The concept of multivariate differential calculus

3. Continuous, deflectable, differentiable and The relationship between partial derivatives of a continuous function

4. Find binary or multivariate partial derivatives

5. Deformation of partial derivative equations under transformation

6. Mixed problems of partial derivatives and differential equations

6. Conditional extreme values ​​and unconditional extreme values ​​of multivariate functions

basic concept

Types and solutions of first-order differential equations

Reducible higher-order differential equations and their solutions

Theory of Higher Order Linear Differential Equations

Key question types

Concepts, properties and calculations

Key question types