自然科學 大學 3年以上以前

求解🙏感謝(*´ω｀*)

- 23. )(II) In Fig. 2.30, A and B are position vectors. Show that the position vector C of the midpoint of the line joining the tips of these vectors is C = (A + B)/2. y A C B X FIGURE 2.30 Exercise 23.