Search found 176 matches
- Wed May 30, 2012 1:27 pm
- Forum: Algebra
- Topic: France TST 2007 (Problem 5)
- Replies: 2
- Views: 1976
Re: France TST 2007 (Problem 5)
My proof is exactly same as Adib but I took a long way to get there. And I think it was an easy one as I was able to solve it and it's a FE.
- Wed May 30, 2012 1:20 pm
- Forum: Geometry
- Topic: USA TST 2011
- Replies: 9
- Views: 5543
Re: USA TST 2011
Adib is right. You really need the lemma even if you don't know that you're using it and its proof is quite easy and nice. And the problem is just killed by it. Again, Zhao rocks. BTW, Adib, I think that you could give the link of Zhao's paper in case you don't have time to prove it.
- Mon May 28, 2012 8:53 am
- Forum: National Math Camp
- Topic: IRAN 1995
- Replies: 1
- Views: 2896
Re: IRAN 1995
It's actually ISL 14 of 1986. A nice one where I used a little inversion and it worked. Remember, inversion keeps the original centre, the inverted centre and the centre of inversion collinear.
- Sun May 27, 2012 7:26 pm
- Forum: Social Lounge
- Topic: অভিনন্দন !
- Replies: 12
- Views: 9984
Re: অভিনন্দন !
No offence, but it's probably the best team I've ever seen. So, best of luck. Hope you guys will nail it. অনেক অনেক অনেক অনেক...........শুভকামনা।
- Tue May 22, 2012 11:09 am
- Forum: Geometry
- Topic: Let's do it together
- Replies: 4
- Views: 2936
Re: Let's do it together
I didn't say that Trig was a must. I said that if use Trig then you need nothing else. You used similarity, actually the main thing is ratio, nothing else.
- Mon May 21, 2012 10:55 am
- Forum: Geometry
- Topic: Let's do it together
- Replies: 4
- Views: 2936
Re: Let's do it together
Hint:
- Sat May 19, 2012 7:22 pm
- Forum: Asian Pacific Math Olympiad (APMO)
- Topic: APMO 2012/04
- Replies: 3
- Views: 9362
Re: APMO 2012/04
It totally uses the idea from ISL 2005 G5. But it's quite a nice one! I loved solving it.
- Fri May 18, 2012 10:56 pm
- Forum: International Mathematical Olympiad (IMO)
- Topic: ISL 1992
- Replies: 4
- Views: 3722
Re: ISL 1992
I guess a spiral similarity must work here. Working on it.
- Thu May 10, 2012 1:31 pm
- Forum: Algebra
- Topic: Inequality (self-made)
- Replies: 8
- Views: 4470
Re: Inequality (self-made)
Oops! Muirhead has a little problem here, sorry.