diketahui titik p (1,-2,5),Q(2,-4,4)dan R (-1,2,7).maka QR=…
Matematika
cindy762
Pertanyaan
diketahui titik p (1,-2,5),Q(2,-4,4)dan R (-1,2,7).maka QR=…
2 Jawaban
-
1. Jawaban EdiHeaven
QR = R-Q
= (-1,2,7) - (2,-4,4)
=(-3,6,3) -
2. Jawaban FionaCitra
Q (2, -4, 4)
= 2i -4j +4k
R (-1, 2, 7)
= -i +2j +7k
QR
= R - Q
= -i +2j +7k -(2i -4j +4k)
= -3i +6j +3k
maka, QR = (-3, 6, 3)