CBSE Class 12 Math 2019 Delhi Set 1 Solved Paper

Question : 24 of 29

Marks: +1, -0

x+y+z=6, x+2 z=7,3 x+y+z=12

OR
Find the inverse of the following matrix using elementary operations.

A={[\table 1 , 2 , -2 ; -1 , 3 , 0 ; 0 , -2 , 1 ]}

Solution:

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