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最小周長
Author:
張丰耘
GeoGebra
New Resources
近似值：有效數字
長方體平面投影 (Codex版)
球體建築師
Earth with coastline
Nested spiral octagon
Discover Resources
題二
z=x^2-y^2
弹簧
ie 6
二項分佈 的複本
Discover Topics
Quadratic Functions
Random Variables
Subtraction
Parametric Curves
Addition