Flag Branch Ranking of IIT> c0-0rdinate ge0metry...
question mark

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?

 

kiran tribhuvan , 14 Years ago
Grade
anser 1 Answers
Aman Bansal

Last Activity: 14 Years ago

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

We are all IITians and here to help you in your IIT JEE preparation.
Now you can win

exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.
Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar :
Click here to download the toolbar..
AMAN BANSAL

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...