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根據百分率找數量（一）: 例3的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
近似值：有效數字
長方體平面投影 (Codex版)
美國國旗 (Codex 版)
判斷球體
國旗 (作圖步驟直接餵給 Claude)
Discover Resources
廣義三角函數
四心的變化II
探究余弦定理
橢圓2--四圓心近似法
圆内弦（迭代）
Discover Topics
Upper and Lower Sum or Riemann Sum
Sequences and Series
Subtraction
Differential Equation
Function Graph