# Answer to Question #7767 in Matrix | Tensor Analysis for David James

Question #7767

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

horizontal

set

vertical

matrix

2 Given a matrix 2 1 1 0 list the numbers of the first row .

[1,0]

[0,1]

[2,1]

[1,1]

3 Given a matrix 1 4 -3 3 0 1 4 -1 2 list the numbers of the first row .

[4 0 -1]

[1 3 4]

[3 0 1]

[4 0 2]

4 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

5 What is this matrix called : 0 0 0 0

diagonal matrix

proper matrix

zero matrix

square matrix

6 Consider a 3x3 square matrix given as 2 0 0 0 2 0 0 0 1 . What is the element in a22

2

0

1

0,0

7 What is another name given to an identity matrix

unit matrix

diagonal matrix

special matrix

triangular matrix

8 Let A be a nxn square matrix . A is a symmetric matrix if A equal to ??.

AT

B

C

4BT

9 Solve the following : a+b+37 = 6, 2a+2b-32 = 9, a+2b-62= -4 .

12,-7,31

12,7,-7

10,5,9

7,-5,21

10 How is the determinant of A written

|A|

[A]

{A}

A

horizontal

set

vertical

matrix

2 Given a matrix 2 1 1 0 list the numbers of the first row .

[1,0]

[0,1]

[2,1]

[1,1]

3 Given a matrix 1 4 -3 3 0 1 4 -1 2 list the numbers of the first row .

[4 0 -1]

[1 3 4]

[3 0 1]

[4 0 2]

4 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

5 What is this matrix called : 0 0 0 0

diagonal matrix

proper matrix

zero matrix

square matrix

6 Consider a 3x3 square matrix given as 2 0 0 0 2 0 0 0 1 . What is the element in a22

2

0

1

0,0

7 What is another name given to an identity matrix

unit matrix

diagonal matrix

special matrix

triangular matrix

8 Let A be a nxn square matrix . A is a symmetric matrix if A equal to ??.

AT

B

C

4BT

9 Solve the following : a+b+37 = 6, 2a+2b-32 = 9, a+2b-62= -4 .

12,-7,31

12,7,-7

10,5,9

7,-5,21

10 How is the determinant of A written

|A|

[A]

{A}

A

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