Question

PLEASE HELP ME

What is the value of element 1,1 in matrix X?

A) m-4

B) m+4

C) m

D) 2

(matrix attached)

Answer 1

A

Explanation:

I got 100% on EDGE 2020 Unit test

Answer 2

The value of element (1,1 )in matrix X is x =( m-4)

Explanation:

Here, solving the given matrix equation, we get

Let X = {x,y}

Now, by matrix multiplication:

x + 2y = m

and my = 2 m

⇒ y = 2

Now, if y = 2,

⇒ x + 2(2) = m

or, x = m -4

Hence, (1,1) entry of X is x =( m-4)