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sinα + sinβ > 0 ?
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
第八周作业
【案例】2018年全国1卷理科12题
異分母分數減法
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
總結
Copy of 固定周界的長方形的面積變化
z=sin(sqrt(x^2+y^2))
练习及小结
反演
Discover Topics
Geometric Transformations
Curve Sketching
Addition
Tree Diagrams
Upper and Lower Sum or Riemann Sum