Free Printable Minor and Cofactor of Matrices

1.

Calculate the determinant

a)

0

b)

-15

c)

-70

d)

10

2.

Find $m_{13}$ (minor) and $c_{13}$ (cofactor).

a)

$m_{13}=16,\ \ c_{13}=16$

b)

$m_{13}=16,\ \ c_{13}=-16$

c)

$m_{13}=8,\ \ c_{13}=8$

d)

$m_{13}=8,\ \ c_{13}=-8$

3.

Calculate the

m_{23\ }

(minor) and

c_{23}

(cofactor)

a)

$m_{23}=12,\ \ c_{23}=12$

b)

$m_{23}=12,\ \ c_{23}=-12$

c)

$m_{23}=-20,\ \ c_{23}=-20$

d)

$m_{23}=-20,\ \ c_{23}=20$

4.

What is the determinant of this matrix?

a)

-2

b)

2

c)

10

d)

24

5.

find

m_{23}\ \ and\ c_{23}

a)

$m_{23}=-74,\ \ c_{23}=-74$

b)

$m_{23}=-74,\ \ c_{23}=74$

c)

$m_{23}=74,\ \ c_{23}=-74$

d)

$m_{23}=74,\ \ c_{23}=74$

6.

Calculate the

m_{33\ }

(minor) and

c_{33}

(cofactor)

a)

$m_{33}=-24,\ \ c_{33}=24$

b)

$m_{33}=-24,\ \ c_{33}=-24$

c)

$m_{33}=8,\ \ c_{33}=-8$

d)

$m_{33}=8,\ \ c_{33}=8$

7.

What is a₂₃

a)

14

b)

4

c)

1

d)

3

8.

BA=

a)

Undefined

b)

c)

d)

9.

a)

3

b)

2/3

c)

3/2

d)

-(1/4)

10.

What do w, x, y and z equal in this matrix equation?

a)

w = 13, x = 4, y = 7, z = 23

b)

w = 13, x = -4, y = 11, z = 23

c)

w = 13, x = 4, y = 11, z = 23

d)

w = 13, x = 4, y = 11, z = 17

Minor and Cofactor of Matrices

Total questions: 10

Worksheet time: 1hrs 22mins

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