Jika vektor a = (1, -2, 3), b = (5, -4, -1), c = (4, 2, -2), vektor a + b – 3c sama dengan
Jika vektor a = (1, -2, 3), b = (5, -4, -1), c = (4, 2, -2), vektor a + b – 3c sama dengan ….
Jawab:
a + b – 3c = (1, -2, 3) + (5, -4, -1) – 3(4, 2, -2)
= (1, -2, 3) + (5, -4, -1) – (12, 6, -6)
= (1 + 5 – 12, -2 – 4 – 6, 3 – 1 + 6)
= (-6, -12, 8)
Jadi vektor a + b – 3c = (-6, -12, 8)
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