Free Printable ACT no.3-2020 Matrices

1.

a)

b)

1 -2

c)

-1 2

-1 -2

d)

1 2

3 0

e)

3 0

2.

The value of B – 2Ais:

a)

0 2

-3 0

b)

-2 2

-3 3

c)

-1 2

-1 -2

d)

1 2

3 0

e)

Cannot be determined

3.

The value of BA is:

a)

4 -2

3 -1

b)

0 2

1 3

c)

4 2

3 -1

d)

0 2

3 3

e)

Cannot be determined

4.

a)

-12

b)

-6

c)

0

d)

6

e)

12

5.

a)

3bx-2ay

b)

3bx+2ay

c)

3bx

2ay

d)

3bx 0

2ay -2ax

e)

3bx -3by

-2ax 2ay

6.

a)

-2xz

b)

6x-8z

c)

6x -7z 8

d)

6x 0 -6z

7x 0 -7z

8x 0 -8z

e)

6x

0

-8z

7.

a)

α = a2 + b2, β = ab

b)

α = a2 + b2, β = 2ab

c)

α = a2 + b2, β = a2 – b2

d)

α = 2ab, β = a2 + b2

8.

a)

b)

c)

d)

None of These

9.

For any square matrix A, AA^t is a

a)

unit matrix

b)

symmetric matrix

c)

skew-symmetric matrix

d)

diagonal matrix

10.

a)

a skew-symmetric matrix

b)

a symmetric matrix

c)

a diagonal matrix

d)

an upper triangular matrix

ACT no.3-2020 Matrices

Total questions: 10

Worksheet time: 10mins

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