Question

calcular as coordenadas do vetor x tal que: 2x+3(2,1,0)=0

Answer 1

Seja o vetor x = (a,b,c)

2x + 3(2,1,0) = 0

2(a,b,c) + (6,3,0) = (0,0,0)

(2a, 2b, 2c) + (6,3,0) = (0,0,0)

(2a+6,2b+3,2c) = (0,0,0)

■ 2a + 6 = 0 ⇔ 2a = -6 ⇔ a = -6/2 ⇔ a = -3

■ 2b + 3 = 0 ⇔ 2b = -3 ⇔ b = -3/2

■2c = 0 ⇔ c = 0/2 ⇔ c = 0

x = (-3,-3/2,0)

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29/02/2016 
Sepauto - SSRC
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