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外積分配律
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
參考：
Cross Product
- Wikiversity
New Resources
四邊形的特性
兩位數加法
画直线等分三角形的面积
球体的体积推导（优化版）
三位數除以一位數（二）
Discover Resources
z=x^2-y^2
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
斯坦納-雷米歐司(Steiner-Lehmus)定理推廣
IMO2015C
翰林數學_2下_CH3-1_對頂角必相等
Discover Topics
Confidence Interval
Solids or 3D Shapes
Upper and Lower Sum or Riemann Sum
Tree Diagrams
Optimization Problems