😀14.1 拋物線

https://www.geogebra.org/m/kqrhy5ns

https://www.geogebra.org/m/nDUUv3Zg

https://www.geogebra.org/m/BFK6P7Ac

https://www.geogebra.org/m/j6rpggbq

https://www.geogebra.org/m/m8nrxbxv

https://www.geogebra.org/m/D55ER2yN#material/y3jnjhgb

https://www.geogebra.org/m/DTABeWZ5