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The equation sqrt({(x-2)^2+y^2})+sqrt({(...

The equation `sqrt({(x-2)^2+y^2})+sqrt({(x+2)^2+y^2})=4` represents

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PATHFINDER-CARTESIAN COORDINATES AND STRAIGHT LINE-QUESTION BANK
  1. The value of lambda so that the equation lambda x^2+2xy+lambday^2+4x+4...

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  2. If pairs of straight lines x^2-2pxy-y^2=0and x^2-2qxy-y^2=0 be such th...

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  3. The equation sqrt({(x-2)^2+y^2})+sqrt({(x+2)^2+y^2})=4 represents

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  4. If the lines represented by x^2-2pxy-y^2=0 are rotated about the origi...

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  5. Product of the perpendiculars from (alpha, beta) to the lines ax^2+2hx...

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  6. The gradient of one of the lines ax^2+2hxy+by^2=0 is twice that of the...

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  7. If pairs of straight lines x^2-2pxy-y^2=0and x^2-2qxy-y^2=0 be such th...

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  8. If one of the pair of lines ax^2+2hxy+by^2=0 bisects the angle between...

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  9. If the quadratic equation ax^2+bx+c=0 has -2 as one of its roots, then...

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  10. The lines 2x-y-1=0, ax+3y-3=0 and 3x+2y-2=0 are concurrent for

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  11. Given the family of lines, a(3x+4y+6) +b(x+y+2)=0. The line of the fam...

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  12. If 3a+2b+6c=0, the family of straight lines ax+by+c=0 passes through a...

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  13. Consider the family of lines (x+y-1)+lambda(2x+3y-5)=0 and (3x+2y-4)+m...

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  14. P(3,1), Q(6,5) and R(x,y) are three points such that the angle PRQ is ...

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  15. The area of the triangle having vertices (-2,1), (2,1) and (lim(mtoinf...

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  16. If f(x+y)=f(x)f(y),forall x,y,inR and f(1)=2, then area enclosed by 3|...

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  17. The difference of the tangents of the angles which the lines x^2(sec^2...

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  18. Mixed term xy is to be removed from the general equation of second deg...

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  19. Two of the straight lines given 3x^3+3x^2y-3xy^2+dy^3=0 are at right a...

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  20. The vertices of a triangle are A(x1,x1tanalpha),(Bx2,x2tanbeta) and C(...

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