Diketahui veltor u=1, -2, 3, v=a, b, -4, dan w=1, 10,6. jika 2u-3v=-w makan nilai a+b=

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Diketahui veltor u=1, -2, 3, v=a, b, -4, dan w=1, 10,6. jika 2u-3v=-w makan nilai a+b=

a+b = 3

Penjelasan dengan langkah-langkah:

Diketahui :

vektor u = (1,-2,3)

vektor v = (a,b,-4)

vektor w = (1,10,6)

2u-3v=-w

a+b = ….

Dicari :

2(1,-2,3)-3(a,b,-4) = (-1,-10,-6)

(2,-4,6)-(3a,3b,-12) = (-1,-10,-6)

(-3a,-3b,-12) = (-1,-10,-6) + (-2,4,-6)

(-3a,-3b,-12) = (-3,-6,-12)

-3a = -3

a = 1

-3b = -6

b = 2

jadi , a+b = 1+2 = 3

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Mapel : Matematika Peminatan

Bab : Vektor

Kelas : 10 SMA.

Kata kunci : vektor


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