Problem 246

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Taifu
Posts: 34
Joined: Sun Jan 13, 2008 8:38 pm

Problem 246

Post by Taifu »

Is it "from a point P outside e the two tangent" or "from a point P inside c and outside e the two tangent" ?

Ciao.
Marco aka Taifu.
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harryh
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Location: Thessaloniki, Greece

Re: Problem 246

Post by harryh »

I presume you are refering to problem #246, so I changed the title (was #245).

Point P is outside the ellipse.
Nothing is said and nothing can be assumed about its position with respect to the circle.
Taifu
Posts: 34
Joined: Sun Jan 13, 2008 8:38 pm

Re: Problem 246

Post by Taifu »

harryh wrote:I presume you are refering to problem #246, so I changed the title (was #245).

Point P is outside the ellipse.
Nothing is said and nothing can be assumed about its position with respect to the circle.
Ops, obviously you're right, it was 246.

Thanks.
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axelbrz
Posts: 51
Joined: Mon Sep 08, 2008 5:34 am

Re: Problem 246

Post by axelbrz »

Hi, when you say "lattice point", are you considering "points with integer coordinates"?

Thanks.
"think(O(n))+O(n) sometimes is better than think(O(1))+O(1)"

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Tommy137
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Re: Problem 246

Post by Tommy137 »

axelbrz wrote:Hi, when you say "lattice point", are you considering "points with integer coordinates"?
Yes.
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yashkochar
Posts: 7
Joined: Tue May 12, 2009 4:17 pm

Re: Problem 246

Post by yashkochar »

Can someone confirm if I have the ellipse right.
semi major axis = 7500
semi minor axis = 5590.16...
Thank you.
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daniel.is.fischer
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Location: Bremen, Germany

Re: Problem 246

Post by daniel.is.fischer »

Yes, that's correct.
Il faut respecter la montagne -- c'est pourquoi les gypaètes sont là.
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