😀7.1 向量函數

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

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/FuncvectMD.htmldmentrard.free.fr

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/FuncvectMD.html

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

https://www.geogebra.org/m/e2xz9qcs