## Search found 217 matches

- Mon Dec 26, 2011 6:51 pm
- Forum: Divisional Math Olympiad
- Topic: Can u Factorize?
- Replies:
**9** - Views:
**3352**

### Re: Can u Factorize?

i cant factorize 11.i tried 11 times all i got is 11.1.1.1.1.1.1.1.1.1.1.1.1. plz help.and labib vai u can evaluate the square root of this and dividing by all the primes less then it.that may be plznt.nvr forget to divide by 2.

- Fri Nov 11, 2011 3:24 pm
- Forum: National Math Camp
- Topic: Complex number in inequalities [Section-1, BOMC-2011]
- Replies:
**7** - Views:
**3153**

### Re: Complex number in inequalities [Section-1, BOMC-2011]

magnitude means just the absolute value.cmplx numbers can be viewed as vectors(though they are something more than vectors.)the magnitude is the length of the vector.u need to know how we place cmplx nmbrs in argand diagram .usually the inequalities we solve r just about magnitude.thats why we can u...

- Sat Oct 29, 2011 6:46 am
- Forum: International Mathematical Olympiad (IMO)
- Topic: 2003 IMO Problem 5
- Replies:
**12** - Views:
**4917**

### Re: 2003 IMO Problem 5

sorry i found out where my mistake is.

- Fri Oct 28, 2011 10:12 pm
- Forum: International Mathematical Olympiad (IMO)
- Topic: 2003 IMO Problem 5
- Replies:
**12** - Views:
**4917**

### Re: 2003 IMO Problem 5

is something wrong with my solution?

- Fri Oct 28, 2011 10:05 pm
- Forum: International Mathematical Olympiad (IMO)
- Topic: 2003 IMO Problem 5
- Replies:
**12** - Views:
**4917**

### Re: 2003 IMO Problem 5

By cauchy schawrtz inequality(£|xi-xj|)^2<n(n-1)/2{£(xi-xj)^2}all we need to prove is that n(n-1)/2<2/3(n^2-1).this is true because n^2+3n-4>0.here £ means sigma.how can this solution be so simple?

- Fri Oct 28, 2011 7:12 pm
- Forum: National Math Camp
- Topic: Tricky problem(Old book ex:1.75): (BOMC)
- Replies:
**10** - Views:
**3431**

### Re: Tricky problem(Old book ex:1.75): (BOMC)

this is the equality case of AMGM so a=b=c=1 and we r done.

- Fri Oct 28, 2011 11:15 am
- Forum: Site Support
- Topic: Re: How to use LaTeX
- Replies:
**4** - Views:
**3174**

### Re: How to use LaTeX

i'm too late.it's hard to do this camp when latex is must.i have n additional problem.i use net with a mobile.