Basics of Parabola

IMPORTANT

Basics of Parabola: Overview

This topic covers concepts, such as, Parabola, Terms Related to Parabola, Chords of the Parabola & Equation of Chord Joining Two Points of Parabola etc.

Important Questions on Basics of Parabola

MEDIUM
IMPORTANT

The extreme points of the laus rectum of the parabola 7,5 and 7,3. Find the equation of the parabola.

HARD
IMPORTANT

Let ABCD be a square of side length 2 units. A line M through A is drawn parallel to BD. Point S moves such that its distances from the line BD and the vertex A are equal. If locus of S cuts M at T2 and T3 and AC at T1, then area of ΔT1T2T3 is

MEDIUM
IMPORTANT

Locus of point of intersection of the straight lines (where t is a real variable parameter) x-t+1y-t-1=0 & x-ty-2t-1=0is

HARD
IMPORTANT

A variable parabola is drawn to pass through A and B ends of diameters of a given circle centred at origin and radius c and to have as directrix a tangent to concentric circle of a radius a (a>c). The coordinate axis being AB and perpendicular diameter. Find the locus of focus of the parabola

HARD
IMPORTANT

From the vertex O of the parabola y2=4x, two mutually perpendicular chords OP and OQ are drawn. Rectangle OPRQ is completed, then locus of point R will be a conic S=0 such that

MEDIUM
IMPORTANT

The slope of the line which belongs to family of lines 1+λx+λ-1y+21-λ=0 and makes shortest intercept on x2=4y-4, is

MEDIUM
IMPORTANT

Let the parabolas y=x2+ax+b and y=xc-x touch each other at 1,0. Then

HARD
IMPORTANT

If point (4,4) lies on parabola whose focus lies on x-axis and directrix is lx+my=1 such that (l,m) lies on curve x2+y2-32xy+8x+8y-1=0 then:

MEDIUM
IMPORTANT

If r1 and r2 be the lengths of perpendicular chords of a parabola y2=4x through its vertex, then

r1r24/3r12/3+r22/3=

EASY
IMPORTANT

Find the auxiliary circle for parabola x2+4x+4y+16=0.

EASY
IMPORTANT

If the Cartesian co-ordinates of the point on the parabola y2=12x whose parameter is 2 is p,q then p+q=

 

HARD
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Let PQ be a focal chord of the parabola y2=4x. If the centre of a circle having PQ as its diameter lies on the line 5y+4=0, then the length of the chord PQ is

HARD
IMPORTANT

If from the vertex of a parabola, a pair of chords be drawn at right angles to one another and with these chords as adjacent sides a rectangle be made, prove that the locus of the further angle of the rectangle is the parabola y2=4ax-8a.

EASY
IMPORTANT

The length of the latus rectum of the parabola 4x2-4y+8x-1=0 is

MEDIUM
IMPORTANT

Find the co-ordinates of a point on the parabola y2=12x, whose ordinate is twice of its abscissa.

HARD
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Prove that the curve whose polar equation is r cos2θ2=1 is a parabola.

HARD
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The abscissa of a point on the parabola y2=20x is 7; find the distance of the point from its focus.

MEDIUM
IMPORTANT

The parabola y2=px passes through 4, -2 Find the length of latus rectum.

MEDIUM
IMPORTANT

Examine whether the point 3, 2 lies inside, outside or upon the parabola y2=6x.

HARD
IMPORTANT

P2t, t2 is a moving point. Find the locus of P