1. e
2. e-1
3. 1
4. 0
0
1. -3,5,7
2. -3,-7,-9
3. 3,-5,7
4. -3,-7,9
-3,5,7
1. equal
2. imaginary
3. real and distinct
4. rational and equal
real and distinct
1. real and distinct
2. imaginary
3. equal
4. rational and equal
imaginary
1. x 3- 4x - 1 = 0
2. x 3- 4x + 1 = 0
3. x 3+ 4x - 1 = 0
4. x 3+ 4x + 1 = 0
x <sup>3</sup>+ 4x - 1 = 0
1. (-9 , -2)
2. (6 , 4)
3. (9 , 2)
4. (2, 9)
(9 , 2)
1. a symmetric matrix
2. a skew- symmetric matrix
3. a null matrix
4. the identity matrix
a skew- symmetric matrix
1. 3,7
2. 4,7
3. 3,9
4. 3,4
3,7
1. log xyz
2. (p-1) (q-1) (r-1)
3. pqr
4. 0
0
1. 2
2. 3
3. 0
4. -1
-1