😃5.3 點積

10.6 向量的內積基礎數學(一~四)線上資源

https://xu-shi-min.gitbook.io/ji-chu-shu-xue-yi-si-xian-shang-zi-yuan/di-10-zhang-xiang-liang/10.6-xiang-liang-de-nei-ji

https://www.geogebra.org/m/N9pvSPf4

https://www.geogebra.org/m/Yu6869By

https://www.geogebra.org/m/XShfg9r8

https://www.geogebra.org/m/juapnqxw