# the system of equations x+2y+3x=4 2x+3y+8z=7 x-y+9z=1 have

1.  unique solution

2.  no solution

3.  infinite solutions

4.  none of these

4

infinite solutions

Explanation :
No Explanation available for this question

# the determinant of m n matrix is defined if

1.  m2=n2

2.  m = n

3.  m ≠- n

4.  none of these

4

m = n

Explanation :
No Explanation available for this question

# the value of is

1.  0

2.  37

3.  111

4.  Not defined

4

Not defined

Explanation :
No Explanation available for this question

# if A= , then A? is

1.  165

2.  -165

3.  -163

4.  None of these

4

-165

Explanation :
No Explanation available for this question

# if A=, then which of the following minor is wrong

1.  M22=5

2.  M31=31

3.  M23=2

4.  M12=-12

4

M23=2

Explanation :
No Explanation available for this question

# If A=, then which of the following factor is wrong

1.  A32=9

2.  A22=27

3.  A11=-20

4.  A12=-31

4

A32=9

Explanation :
No Explanation available for this question

# is equal to

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# if A=, then A-1 is

1.

2.

3.

4.  None of these

4

Explanation :
No Explanation available for this question

# if A is a square matrix of order 4, and I is a unit matrix, then it is true that

1.  Det(2A)=16det(A)

2.  Det(-A)=-det(A)

3.  Det(2A)=2det(A)

4.  Det(A+I)=16detA+I

4

Det(2A)=16det(A)

Explanation :
No Explanation available for this question

# The Differential Equation which is linear is

1.  dy/dx+x2y=sin y

2.  dy/dx-x2y=sin x

3.  (1+y)dy/dx+sin x=0

4.  dy/dx+y(y+x)=x2

4