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paraboIa 1] Iength of Iatus rectum whose focus is {-1 1}& directrix 4x+3y-24=0? 2] 2x+y+k=0[k is a constant]is a normaI to y^2=-8x ,then k=? 3] sIope of commom tangent to paraboIa y^2=16x & x^2=2y is? 4] a straight Iine G whvse sIope is m, passes through pt {2 0} and intersects y^2-4x+4=0 in distinct pts, hence m Iies in the intervaI? 5] the extremities of Iatus rectum of a paraboIa are {3 -2} & {3 0}, if the foot of directrix is in the 4th quadrant then the eqt of directrix can be?
paraboIa
1] Iength of Iatus rectum whose focus is {-1 1}& directrix 4x+3y-24=0?
2] 2x+y+k=0[k is a constant]is a normaI to y^2=-8x ,then k=?
3] sIope of commom tangent to paraboIa y^2=16x & x^2=2y is?
4] a straight Iine G whvse sIope is m,
passes through pt {2 0} and intersects y^2-4x+4=0 in distinct pts, hence m Iies in the intervaI?
5] the extremities of Iatus rectum of a paraboIa are {3 -2} & {3 0}, if the foot of directrix is in the 4th quadrant then the eqt of directrix can be?
dear kiran,
SOLUTION : 1.Parabola is a curve whose distance from a fixed point (focus) and the fixed line (directrix) is equal.
Thus using this condition we can evaluate the equation in the std. form and then LR.
3. slope =1
4. the line cuts in 1 distict pt. or in more than 1 pts. ...?
5. 2y^2+x=0
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