Question

plz solve dont write use less concept based on matrices​

Answer 1

Answer:

x=3

y=4

Step-by-step explanation:

Question:

If $\left[\begin{array}{ccc}4\\x\\-y\end{array}\right]$    $\left[\begin{array}{ccc}2&1\\\end{array}\right]$    =    $\left[\begin{array}{ccc}8&4\\6&3\\-8&-4\end{array}\right]$  , Find x and y

Answer:

• Multiply the matrices in the left hand side. The no.of columns of 1st matrix should be equal to no.of rows of 2nd matrix.

Let 1st matrix: A₃ₓ₁

Let 2nd matrix: A₁ₓ₂

Resultant will be of order: A₃ₓ₂

• Then, compare the elements and equate with their respective position.