1)Векторы коллинеарны:
x1/x2 = y1/y2 = z1/z2
y/-3 = 4/2 = -2/-1
y/-3 = 2
y = -3•2 = -6
2)|a| = ✓4²+(-6)²+(-2)² = ✓16+36+4 = ✓56 = 2✓14
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1)Векторы коллинеарны:
x1/x2 = y1/y2 = z1/z2
y/-3 = 4/2 = -2/-1
y/-3 = 2
y = -3•2 = -6
2)|a| = ✓4²+(-6)²+(-2)² = ✓16+36+4 = ✓56 = 2✓14