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The equation a^2x^2+2h(a+b)x y+b^2y^2=0 ...

The equation `a^2x^2+2h(a+b)x y+b^2y^2=0` and `a x^2+2h x y+b y^2=0` represent two pairs of perpendicular straight lines two pairs of parallel straight lines two pairs of straight lines which are equally inclined to each other none of these

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CENGAGE ENGLISH-STRAIGHT LINES-All Questions
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  2. The equation to a pair of opposite sides of a parallelogram are x^2-5x...

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  3. The equation a^2x^2+2h(a+b)x y+b^2y^2=0 and a x^2+2h x y+b y^2=0 repre...

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  4. The equation x^3+x^2y-x y^2 =y^3 represents (a)three real straight lin...

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  5. The image of the pair of lines represented by a x^2+2h x y+b y^2=0 by ...

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  6. The combined equation of the lines l1a n dl2 is 2x^2+6x y+y^2=0 and ...

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  7. If the equation a x^2-6x y+y^2=0 represents a pair of lines whose slo...

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  8. The equation of a line which is parallel to the line common to the pai...

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  9. If the sum of the slopes of the lines given by x^2-2c x y-7y^2=0 is fo...

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  10. Area of the triangle formed by the line x+y=3 and the angle bisectors ...

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  11. The equation x^2y^2-9y^2-6x^2y+54 y=0 represents (a) a pair of stra...

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  12. The straight lines represented by (y-m x)^2=a^2(1+m^2) and (y-n x)^2=...

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  13. If the pairs of lines x^2+2x y+a y^2=0 and a x^2+2x y+y^2=0 have exa...

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  14. The condition that one of the straight lines given by the equation a x...

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  15. If the represented by the equation 3y^2-x^2+2sqrt(3)x-3=0 are rotated...

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  16. A point moves so that the distance between the foot of perpendiculars ...

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  17. The angle between the pair of lines whose equation is 4x^2+10 x y+m ...

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  18. Find the point of intersection of the pair of straight lines repres...

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  19. Find the angle between the lines represented by x^2+2x ysectheta+y^2=0

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  20. If the pair of lines sqrt(3)x^2-4x y+sqrt(3)y^2=0 is rotated about the...

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