Question

Tolong bantu kak, Tentang vektor. Kelas 10 matematika

Answer 1

Jawaban:

40] 8i

41] PQ = (-12 , -16)

42] 10i - 6j

Penjelasan dengan langkah-langkah:

40]

3a + 2b

= 3(4 , -2) + 2(-2 , 3)

= (12 , -6) + (-4 , 6)

= (8 , 0)

3a + 2b = 8i

41]

PQ = Q - P

PQ = (-14 , -6) - (-2 , 10)

PQ = (-12 , -16)

42]

a + 2b - c

= (3 , -2) + 2(1 , 0) - (-5 , 4)

= (3 , -2) + (2 , 0) - (-5 , 4)

= (5 , -2) + (5 , -4)

= (10 , -6)

a + 2b - c = 10i - 6j