Question

If 2A+3B = [ 2/4 3/0] and 3A+2B = [-2/1 2/-5] find A and B ​

Answer 1

Explanation:

Since, 2A+3B=[

2

3

−1

2

4

5

] …………(1)

A+2B=[

5

1

0

6

3

2

] ………….(2)

2× Equation (2)− Equation (1)

⇒2A+4B−2A−3B=[ 10−22−30+12−6−44−5 ]

⇒B=[ 8−11102−1 ]