Search found 217 matches

by zadid xcalibured
Mon Dec 26, 2011 6:51 pm
Forum: Divisional Math Olympiad
Topic: Can u Factorize?
Replies: 9
Views: 3434

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.
by zadid xcalibured
Fri Nov 11, 2011 3:24 pm
Forum: National Math Camp
Topic: Complex number in inequalities [Section-1, BOMC-2011]
Replies: 7
Views: 3240

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...
by zadid xcalibured
Sat Oct 29, 2011 6:46 am
Forum: International Mathematical Olympiad (IMO)
Topic: 2003 IMO Problem 5
Replies: 12
Views: 5063

Re: 2003 IMO Problem 5

sorry i found out where my mistake is.
by zadid xcalibured
Fri Oct 28, 2011 10:12 pm
Forum: International Mathematical Olympiad (IMO)
Topic: 2003 IMO Problem 5
Replies: 12
Views: 5063

Re: 2003 IMO Problem 5

is something wrong with my solution?
by zadid xcalibured
Fri Oct 28, 2011 10:05 pm
Forum: International Mathematical Olympiad (IMO)
Topic: 2003 IMO Problem 5
Replies: 12
Views: 5063

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?
by zadid xcalibured
Fri Oct 28, 2011 7:12 pm
Forum: National Math Camp
Topic: Tricky problem(Old book ex:1.75): (BOMC)
Replies: 10
Views: 3573

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.
by zadid xcalibured
Fri Oct 28, 2011 11:15 am
Forum: Site Support
Topic: Re: How to use LaTeX
Replies: 4
Views: 3258

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.