[기하벡터 #13(2)] 벡터연산/레벨-2 (위치벡터)

[기하벡터 #13(2)] 벡터연산/레벨-2

[레벨2-1]------------------------------------------------------------

[레벨 2-2]-----------------------------------------------------------

-------------------------------------------------------------------------
위치벡터
-------------------------------------------------------------------------

[레벨2-3]---------------------------------------------------------------

[레벨2-4]---------------------------------------------------------------