# If AB = A and BA = B then

1.  cannot be determined

2.  2A = B

3.  A2 = A and B2 = B

4.  A = 2B

4

A2 = A and B2 = B

Explanation :
No Explanation available for this question

# If A2 = A, B2 = B, AB = BA = O then (A+B)2 =

1.  0

2.  A2–B2

3.  A+B

4.  AB

4

A+B

Explanation :
No Explanation available for this question

1.  a3I+3a2bE

2.  a3I+3ab2E

3.  a3I+b3E

4.  aI+bE

4

a3I+3a2bE

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# If A=diag(3,3,3) then A4 =

1.  27A

2.  684A

3.  81A

4.  12A

4

27A

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  4I

2.  A

3.  0

4.  I

4