Posted by **sunday** on Saturday, March 15, 2014 at 6:21am.

1 A ……... is a rectangular array of numbers that are enclosed within a bracket .

horizontal

set

vertical

matrix

2 When the numbers of rows is equal to the numbers of columns equal to 'n'. Where m=n. Then is called…..

a square matrix

a column

a row

a matrix

3 What is this matrix called :

[0000]

diagonal matrix

proper matrix

zero matrix

square matrix

4 What is another name given to an identity matrix

unit matrix

diagonal matrix

special matrix

triangular matrix

5 Let A be a

n×n

square matrix . A is a symmetric matrix if A equal to …….

AT

B

C

4BT

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. Sove for a

2

4

7

3

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