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利用積分計算次方總和
Author:
蘇啟天
GeoGebra
New Resources
双心四边形
斐波那契螺旋弧线（表格法）
盈利與虧蝕
第八周作业3
活动三：应用性质
Discover Resources
邊長與三角形（二）
Key stage 1
拋物線聖路易拱門
Solve Linear Inequalities graphically(二元一次不等式的圖解)
Locus: Equidistance From Two Intersecting Lines
Discover Topics
Percentages
Statistical Characteristics
Matrices
Similar Triangles
Piecewise Functions