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過圓內一點最短弦
Author:
李春培
過圓內一點最短弦
GeoGebra
New Resources
平行線的斜率
讀磅
第八周作业
球体的体积推导（优化版）
球体的体积推导
Discover Resources
Probability animation
Is this a prism 4
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
test01
七巧板綜合的副本
Discover Topics
Complex Numbers
Calculus
Correlation
Percentages
Division