Home
Class 11
MATHS
The condition that the pair of straight ...

The condition that the pair of straight lines `ax^(2)+2xy+by^(2)=0` are parallel is:

A

`h^(2)+ab=0`

B

`h^(2)-ab=0`

C

`a+b=0`

D

`a-b=0`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TWO DIMENSIONAL ANALYTICAL GEOMETRY

    PREMIERS PUBLISHERS|Exercise PROBLEM FOR PRACTICE (ANSWER THE FOLLOWING QUESTIONS)|13 Videos
  • TRIGONOMETRY

    PREMIERS PUBLISHERS|Exercise CHOOSE THE CORRECT ANSWER|62 Videos
  • Vector Algebra -I

    PREMIERS PUBLISHERS|Exercise Choose Correct Option|38 Videos

Similar Questions

Explore conceptually related problems

If h^(2)=ab then the angle between the pair of straight lines given by ax^(2)+2hxy+by^(2)=0 is

Find the separate equation of the following pair of straight lines 3x^(2)+2xy-y^(2)=0

If h^(2)=ab then the angle between the pair of straight lines given by ax^2+2hxy+by^2=0 is

Show that if one of angle betwwen pair of straight lines ax^(2)+2hxy+by^(2)=0 is 60^(@) then (a+3b)(3a+b)=4h^(2)

A DeltaOPQ is formed by the pair of straight lines x^(2)-4xy+y^(2)=0 and the line PQ. The equation of PQ is x+y-2=0. Find the equation of the median of the triangle DeltaOPQ drawn from the origin O.

The slope of one of the straight lines ax^(2)+2hxy+by^(2)=0 is three times the other, show that 3h^(2)=4ab .

Show that the pairs of straight lines 2x^2+6x y+y^2=0 and 4x^2+18 x y+y^2=0 have the same set of angular bisector.