Question

6 Commpute the matrix :
∣∣∣102−5−314−1∣∣∣+∣∣∣32−506−2−1−3∣∣∣
∣∣∣42−3−73−13−4∣∣∣
∣∣∣42−3−53−13−4∣∣∣
∣∣∣41−3−53−13−4∣∣∣
∣∣∣423−53−13−4∣∣∣

7 Let A=
∣∣∣2003∣∣∣
and B=
∣∣∣70011∣∣∣
. Find AB
∣∣∣140033∣∣∣
∣∣∣14003∣∣∣
∣∣∣10033∣∣∣
∣∣∣40033∣∣∣

8 Solve the linear equation : 2x+y-3z= 5,3 x-2y-2z= 5, and 5x-3y-z= 16.
(1 , 3 , -2 )
(1 , -3 , 2 )
(1 , -3 , -1 )
(1 , -3 , -2 )

9 Two systems of linear equations involving the same variables are said to be ......, if they have the same solution set.
matrix
subset
equivalent
commutative

10 Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Solve for a
2
4
7
3