Question

Tolong bantu jawab yg nomor 2
Diket: jajargenjang pqrs dengan t titik tengah pq dan o perpotongan diagonal pr dan qs.jika vektor pq=u dan vektor ps=qs,nyatakan vektor vektor berikut dalam u dan v..
....
Liat di gambar yaaa.....

Answer 1

PQ = u = SR
PS = v = QR
A) QS = QP + PS = -u + v = v - u
B) OR = 1/2 PR = 1/2 (PQ + QR) = 1/2 (u + v) = 1/2 u + 1/2 v
C) TS = TP + PS = 1/2 QP + PS = 1/2 (-u) + v = v - 1/2 u
D) RT = RQ + QT = RQ + 1/2 QP = -v + 1/2 (-u) = -1/2 u - v