Resposta:
Olá!
[tex]2v_1 = 2(a,b+2,a+b)[/tex]
[tex]v_2 = (2,0,-2)[/tex]
[tex]Como[/tex] [tex]2v_1 = v_2[/tex] [tex]:[/tex]
2(a , b+2 , a+b) = (2 , 0 , -2)
(2a , 2b+4, 2a+2b) = (2 , 0 , -2)
2a = 2 <=> a = 1
2(b+ 2) = 0 <=> 2b + 4 = 0 <=> 2b = -4 <=> b = -2
2(a + b) = -2
Logo:
a + b
= 1 + (-2)
= 1 - 2
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Resposta:
Olá!
[tex]2v_1 = 2(a,b+2,a+b)[/tex]
[tex]v_2 = (2,0,-2)[/tex]
[tex]Como[/tex] [tex]2v_1 = v_2[/tex] [tex]:[/tex]
2(a , b+2 , a+b) = (2 , 0 , -2)
(2a , 2b+4, 2a+2b) = (2 , 0 , -2)
2a = 2 <=> a = 1
2(b+ 2) = 0 <=> 2b + 4 = 0 <=> 2b = -4 <=> b = -2
2(a + b) = -2
Logo:
a + b
= 1 + (-2)
= 1 - 2
= -1