Soal 1
1.
A= 5i + 3j B= 2i + 4j - k
AxB = (Ai Bk - Ai Bj ) ai + (Az Bi - Ai Bk) ai + (Ai Bj - Aj Bi) az
= ( 5.(-1) - 5.4 ) ai + ( 0.2 - 5(-1) ) ai + 0
= ( -25 ) ai + ( 6 ) ai
Soal 2
2. A) R = ( x ujung - x pangkal ) i + ( y ujung - y pangkal ) j
= ( 4 - 1 ) i + ( 3 - 0 ) j
= 3i + 3j
A = 3i + 3j
