Diketahui matriks P adalah matriks 3 x 4 dan aij = 5i - 2j. Tentukan matriks P

Diketahui matriks P adalah matriks 3 × 4 dan aij = 5i - 2j. Tentukan matriks P!

Jawab:

aij = 5i – 2j

a11 = 5(1) – 2(1) = 5 – 2 = 3

a12 = 5(1) – 2(2) = 5 – 4 = 1

a13 = 5(1) – 2(3) = 5 – 6 = -1

a14 = 5(1) – 2(4) = 5 – 8 = -3

a21 = 5(2) – 2(1) = 10 – 2 = 8

a22 = 5(2) – 2(2) = 10 – 4 = 6

a23 = 5(2) – 2(3) = 10 – 6 = 4

a24 = 5(2) – 2(4) = 10 – 8 = 2

a31 = 5(3) – 2(1) = 15 – 2 = 13

a32 = 5(3) – 2(2) = 15 – 4 = 11

a33 = 5(3) – 2(3) = 15 – 6 = 9

a34 = 5(3) – 2(4) = 15 – 8 = 7

Bentuk matriksnya:

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