# if A=, then A is

1.  Skew symmetric

2.  Sysmmetric

3.  Skew hermitian

4.  Hermitian

4

Hermitian

Explanation :
No Explanation available for this question

# product of two orthogonal matrices is a

1.  Unitary matrix

2.  Orthogonal matrix

3.  Unit matrix

4.  None of these

4

Orthogonal matrix

Explanation :
No Explanation available for this question

# the matrix A= is

1.  Involutory

2.  Orthogonal

3.  Nilpotent of index

4.  Idempotent

4

Idempotent

Explanation :
No Explanation available for this question

# rank of the matrix is

1.  0

2.  1

3.  2

4.  3

4

2

Explanation :
No Explanation available for this question

# if there exists a non-zero minor of order r, then rank of A is

1.  Equal to r

2.  Greater than or equal to r

3.  Less than r

4.  Less than or equal to r

4

Greater than or equal to r

Explanation :
No Explanation available for this question

# A skew symmetric matrix cannot be of rank

1.  0

2.  1

3.  Greater than 1

4.  -1

4

1

Explanation :
No Explanation available for this question

# if a matrix A can be reduced to the normal term by using elementary operation, then p(A) is

1.  5

2.  0

3.  1

4.  2

4

5

Explanation :
No Explanation available for this question

# if A=, B=, then p(AB) is

1.  0

2.  1

3.  2

4.  3

4

1

Explanation :
No Explanation available for this question

# the system of equations -2x+y+z=a x-2y+z=b x+y-2x=c have no solution if

1.  a+b+c≠0

2.  a+b+c=0

3.  a=1,b=1,c=-2

4.  none of these

4

a+b+c≠0

Explanation :
No Explanation available for this question

# solution of the equations x+2y-z=3 3x-y+2z=1 2x-2y+3z=2 Are

1.  x=4,y=-1,z=4

2.  x=-1,y=4,z=4

3.  x=-1,y=-1,z=4

4.  x=4,y=4,z=-1

4

x=-1,y=4,z=4

Explanation :
No Explanation available for this question

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