Table of Contents

1. Introduction
   1. Some introductions
2. The derivative and some approximations
   1. The Derivative of a function
   2. Taylor Polynomial
   3. Linear approximation of a plane curve
   4. Osculating circle of a plane curve
   5. Tangent vector of a plane curve
   6. Arc length parameter
   7. Tangent vector of a space curve
3. Curves with constant length
   1. A curve with constant width
   2. A curve with constant width
   3. A Polynomial Curve of Constant Width
4. Locus is a list.
   1. List commands
   2. Listing a ingegral curve
   3. Delaunay curve
   4. The curve whose curvature is a function