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# Example of Math Graphics 数学函数图 制图法

## 2.4. space curve 3D

Content
1. Classication by plot function 按制图函数分类:
2. Classication by appliaction 按应用分类:
3. Graphics objects
4. Drawing

A simple straightforward way to run interactive mathematics in a web page is by mathHand.com. All 3D graphes can be zoom, move or spin.

### by wireframe3D(x)

1. wireframe3D(x)

### by parametric3D(x)

2. ellipsoid
3. conjugate-roots

#### with 3 parameters and 1 variable t or x

4. wireframe3D(sin(x),cos(x),x)
5. parametric3D(cos(t),sin(t),t)
6. parametric3D(sin(x),cos(x),x)
7. parametric3D(x,x,x)

#### with 2 parameters and 1 variable t or x

the 2D curve becomes 3D by clicking the 3D checkbox
8. parametric3D(x,x)
9. complex sn(x) Curve

### by spin3D(x)

spin different directions by clicking the spin checkbox.
10. spin3D(x**2)

#### Animation

The parametric3D( ) plots animation by clicking the spin checkbox.
11. A space cubic curve. Most simple, but only its movement shows what it is about.
12. A Lissajous figure with rotating phase.
13. The above Lissajous figure is a projection of this space curve.
14. Another space curve, a little bit more complicated: hyperbolic spiral.
15. Cabello's Curve 曲线

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### Reference 参阅

• example 例题
• graph 制图
• graphics 制图法
• animation 动画 ﻿