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> Interno Takmicenje, Rezultati

m_r
post Mar 24 2008, 06:34 PM
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Group: Članovi
Joined: 23-April 06
Member No.: 56
Ime i prezime: Marko Radovanovic



Evo rezultata internog takmicenja za 1. razred.

Da podsetim da je interno takmicenje za 3-4. razred u utorak od 10.

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Hannibal Lecter
post Mar 24 2008, 08:16 PM
Post #2





Group: Članovi
Joined: 15-October 06
From: People's Democratic Republic of Konjarnik
Member No.: 154
Status: Bivši učenik MGa
Ime i prezime: Ilija Ivanišević
Škola/Razred: Fizički fakultet, B smer, I godina,



Zadaci za II godinu:

1.Izracunati sumu

 \sum_{i=0}^{2007}  \frac{Xi^3}{1-3Xi+3Xi^2}

gde je  Xi=i/2007 za i=0...2007

2.Neka su a,b,c pozitivni realni brojevi tako da  a+b+c \geq \frac{1}{a}+\frac{1}{b}+\frac{1}{c}
Dokazati nejednakost  a+b+c \geq \frac{3}{a+b+c}+\frac{2}{abc}

3.Unutar trougla ABC nalazi se tacka M takva da je
 \angle MAB = \angle MBC+\angle MCA = \phi
Dokazati da je
 \frac{1}{sin^2\phi}=\frac{1}{sin^2\alpha}+\frac{1}{sin^2\beta}+\frac{1}{sin^2\gamma}

4.Krugovi C1 i C2 seku se u tackama P i Q. Zajednica tanegenta ovih krugova bliza tacki P dodiruje krugove u tackama A i B, redom. Tangenta kruga C1 u tacki P sece krug C2 u tacki E, razlicitoj od , dok tangenta kruga C2 u P sece C1 u tacki F razlicitoj od P. Neka su H i N tacke na duzima AF i BE, redom, takve da ja AH=AP i BK=BP. Dokazati da su tacke A, H, Q, K, B konciklicne.

5.Dato je 8 jedinicnih kocki, pri cemu su 24 strane obojene u plavo i 24 u crveno. Dokazati da od njih mozemo sastaviti kocku dimenzija 2*2*2 koja ima jednak broj plavih i crvenih jedinicnih kvadrata na povrsini

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Uradio sam prva dva i treci nesto muljo

I da tako sam pro za Mimetex soproud.gif

This post has been edited by Noddy: Mar 24 2008, 08:17 PM


--------------------
And as we wind on down the road
Our shadows taller than our soul
There walks a lady we all know
Who shines white light and wants to show
How everything still turns to gold
And if you listen very hard
The truth will come to you at last
When all are one and one is all
To be a rock and not to roll


Svi me žele, a ja sam nedodirljiv!
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Posts in this topic
m_r   Interno Takmicenje   Mar 24 2008, 06:34 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 24 2008, 07:48 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 24 2008, 08:16 PM
Wolfbrother   RE: Interno Takmicenje   Mar 24 2008, 08:18 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 24 2008, 08:18 PM
Wolfbrother   RE: Interno Takmicenje   Mar 24 2008, 08:34 PM
Wolfbrother   RE: Interno Takmicenje   Mar 24 2008, 08:49 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 24 2008, 09:00 PM
Wolfbrother   RE: Interno Takmicenje   Mar 24 2008, 09:04 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 24 2008, 09:11 PM
SerGrimReaper   RE: Interno Takmicenje   Mar 25 2008, 12:21 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 25 2008, 01:01 PM
Hannibal Lecter   RE: Interno Takmicenje   Mar 25 2008, 02:13 PM
^_NiN0_^   RE: Interno Takmicenje   Mar 25 2008, 02:40 PM
Cekaaa   RE: Interno Takmicenje   Mar 25 2008, 03:03 PM
^_NiN0_^   RE: Interno Takmicenje   Mar 25 2008, 03:20 PM
Cekaaa   RE: Interno Takmicenje   Mar 25 2008, 05:05 PM
^_NiN0_^   RE: Interno Takmicenje   Mar 25 2008, 05:21 PM


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