- #1
jiangxiaoyu
- 8
- 0
All characters are vector quantities
The question is prove the following equation:
→ → → → → → → → → →
(2a + b)×(c -a ) + (b + c)×(a × b) = a × c
The question is prove the following equation:
→ → → → → → → → → →
(2a + b)×(c -a ) + (b + c)×(a × b) = a × c