###
If A = [3 2 1 4 -1 2 7 3 -3], then find A
^{
-1
}
and hence solve the following system of equations : 3x + 4y + 7z = 14, 2x − y + 3z = 4, x + 2y − 3z = 0

### OR

###
If A = [2 1 1 1 0 1 0 2 -1] find the inverse of A using elementary row transformations and hence solve the following matrix equation
*
XA
*
= [1 0 1 ].

This is a question of CBSE Sample Paper - Class 12 - 2017/18.

You can download the question paper here https://www.teachoo.com/cbse/sample-papers/

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