Diketahui vektor p= 3i+2k, q=i-2j+3k, r=4i+3j-k. Tentukan nilai a. 2p x 3r b. (p x r) x q c. (3p x r) x q Jawab dg serius dan usahakan benar ya.., jangan diawur

p = 3i+2k
p = ( 3 2 )

q = i-2j+3k
q = ( 1 -2 3 )

r = 4i+3j-k
r = ( 4 3 -1 )

Nilai:
a. 2p x 3r
= 2( 3 2 ) × 3( 4 3 -1 )
= ( 6 4 ) × ( 12 9 -3 )
= ( 72 36 0 )
b. (p x r) x q
= ((3 2)(4 3 -1) × (1 -2 3)
= ( 12 6 0) × (1 -2 3)
= (12 -12 0)
c. (3p x r) x q
= (3(3 2) × (4 3 -1) × (1 -2 3)
= ((6 6) × (4 3 -1) × (1 -2 3)
= (24 -36 0)

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