If three points A, B and C have position vectors (1, x, 3), (3, 4, 7) and (y, -2, -5) respectively and if they are collinear then (x, y) is equal to

1.  (2, 3)

2.  (-2, 3)

3.  (-2, -3)

4.  (2, -3)

4

(2, -3)

Explanation :
No Explanation available for this question

If A,B are square matrices of order 3.A is non singular and AB=0,then B is a

1.  null matrix

2.  non sigular matrix

3.  singular matrix

4.  unit matrix

4

null matrix

Explanation :
No Explanation available for this question

Least number among

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.  (1/7)tan-1(tanx/2)+c

4.  (1/4)tan-1(tanx/2)+c

4

Explanation :
No Explanation available for this question

If a straight line perpendicular to 2x -3y + 7 = 0 forms a triangle with the co-ordinate axes whose area is 3 sq. units, then the equation of the straight line is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  log |1+cot(x/2)|+c

2.  log |1-tan(x/2)|+c

3.  log |1-cot(x/2)|+c

4.  log |1-tan(x/2)|+c

4

log |1-cot(x/2)|+c

Explanation :
No Explanation available for this question

If (-2, 6) is the image of the point (4, 2) with respect to the line L = 0, then L is equal to

1.  6x - 4y - 7 = 0

2.  2x + 3y - 5 = 0

3.  3x - 2y + 5 = 0

4.  3x - 2y + 10 = 0

4

3x - 2y + 5 = 0

Explanation :
No Explanation available for this question

If the co-ordinate axes are the bisectors of the angles between the pair of lines ax2 + 2hxy + by2 = 0, where h2 > ab and a ≠ b, then

1.  a + b = 0

2.  h = 0

3.  h ≠ 0, a + b = 0

4.  a + b ≠ 0

4

h = 0

Explanation :
No Explanation available for this question

1.  2θ

2.  θ/2

3.  θ/3

4.  θ

4