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GeoGebra
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GeoGebra
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x-1>=lnx
Author:
杨晓晨
GeoGebra
New Resources
撒针估算面积实验
盈利與虧蝕
斐波那契螺旋弧线（表格法-可动态调节）
第八周作业1
常见四边形是否是双心四边形
Discover Resources
六年級
橫向橢圓
四邊形四個西姆松圓交於九點心
工具：DimensionArrows
小船平移2
Discover Topics
Cylinder
Derivative
Translation
Quadrilaterals
Linear Programming or Linear Optimization