Fourth, the calculation formula of curvature center in section 7 of chapter 3: progressive line and progressive line.

Chapter 5 Section 5 Trial and error method of generalized integral Sigma function (full section)

Second, the third section of Chapter 7 can be transformed into a homogeneous equation.

The Bernoulli Equation in the Second and Fourth Sections

Section 9 Euler equation (full section)

Section 10 Examples of Solving Linear Differential Equations with Constant Coefficients (Full Section)

Section II Mixed Products Chapter VIII

Chapter 9 Section 1 N-dimensional space

Section 3 Application of Second Order and Total Differential in Approximate Calculation

Section 9 Taylor formula of binary function (whole section)

Section 10 Least Square Method | (full section)