Home » Ask & Discuss » Mathematics
« Back to Discussion

Integral Calculus

Hot goIITian

Joined:	17 Nov 2008
Post:	137

8 Apr 2009 16:50:50 IST

0 People liked this

358

Assertion and reasoning

Engineering Entrance , JEE Main , JEE Advanced , Mathematics , Integral Calculus

statement-1: If the distances of a point Pfrom te line x+y+2=0 and point (3,4) are same then the locus P will be a parabola.

Statement-2: If the distances of a point P from a fixed line and a fixedpoint are same then the locus of P will be a parabola.

explain why u feel the answer is A or B or C or D

Comments (4)

Nikhil Khandelwal

New kid on the Block

Joined: 7 Apr 2009

Posts: 27

8 Apr 2009 17:03:37 IST

Like 1 people liked this

Ans is c as the locus is a parabola if the point doesn't lie on the given line.

if the fixed point lies on the fixed line, then the locus is perpendicular to line at dat point

Nikhil Khandelwal

New kid on the Block

Joined: 7 Apr 2009

Posts: 27

8 Apr 2009 17:03:57 IST

Like 0 people liked this

is it the ans

Madmax

Blazing goIITian

Joined: 24 Dec 2007

Posts: 1111

8 Apr 2009 17:04:04 IST

Like 1 people liked this

A right R wrong....Reason shud be "point P from a fixed line and a fixedpoint NOT ON THE LINE are same"....as can be seen 3,4 doesn't lie on the line x+y+2=0 so it indeed gives a parabola....

hope this helps....cheers!!

Whoops Sorry Nikhil........Din't see ur post.......See the time difference in our replies (less than 20 seconds!!!!)

Sakura

Hot goIITian

Joined: 17 Nov 2008

Posts: 137

8 Apr 2009 17:06:06 IST

Like 0 people liked this

yes the answer is right, thank u

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team