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1.3 集合的基本运算(P10 图1.3-1 并集)
Author:
张中强
P10 图1.3-1 并集动态展示
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P11 图1.3-3 集合交集动态展示
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集合A、B满足什么条件时,会有A交B=A?A并B=A?
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【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
球体的体积推导
兩組對邊相等的四邊形
四邊形的特性
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Addition of 2 Directed Numbers
上色練習
黃金矩形
面積題 A
一线三等角模型
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Volume
Arithmetic Mean
Matrices
Straight Lines
Diagrams