Home » Ask & Discuss » Mathematics. » Analytical Geometry « Back to Discussion

Analytical Geometry

New kid on the Block

Joined:	3 Jan 2012
Post:	3

7 Jan 2012 20:45:56 IST

1 People liked this

277

circles (ex-23.1,15

Mathematics

Find the equation of the circles touching y-axis at(0,3) and making an intercept of 8 units on x-axis .

Share this article on:

Comments (3)

saurav

Cool goIITian

Joined: 30 May 2010

Posts: 48

7 Jan 2012 21:03:18 IST

Like 0 people liked this

Use concept of family of circles.x^2+(y-3)^2+kx=0 is the equation for the family of circles touching y-axis at (0,3).now this circle has intercept of length 8 on x-axis.in general notation this is sqrt(g^2-c)=8.g=k/2,c=9

hemang

Blazing goIITian

Joined: 27 Dec 2010

Posts: 1474

8 Jan 2012 14:22:23 IST

Like 1 people liked this

actually sourav you are incorrect.

the formula for the intercept is

2*sqrt[g^2 - c].

not sqrt[g^2 - c].

shubhankar satvaya

New kid on the Block

Joined: 3 Jan 2012

Posts: 3

26 Feb 2012 19:42:20 IST

Like 0 people liked this

i cant understand??????????

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