Question

Let A(2 1 1 1) and B(2 -5 0 1). If AX+3B=0, then find the value of x

Answer 1

Answer:

X = -3,0,15,-3

Explanation:

if A = 2 and B = 2

AX + 3B = 0

2X + 3(2) = 0

2X + 6 = 0

X = -3

if A = 1 and B = -5

1X + 3(-5) = 0

X - 15 = 0

X = 15

if A = 1 and B = 0

1X + 3 (0) = 0

X + 0 = 0

X= 0

if A = 1 and B = 1

1X + 3(1) = 0

X + 3 =0

X = -3