Search found 1175 matches
- Fri Dec 26, 2014 12:05 am
- Forum: Introductions
- Topic: It's Me! *Mahi* - Nur Muhammad Shafiullah
- Replies: 0
- Views: 4860
It's Me! *Mahi* - Nur Muhammad Shafiullah
Hello! I am Nur Muhammad Shafiullah, from Dhaka, Bangladesh. I am from Dhaka College, HSC batch 2014. Before that, I was in Monipur High School & College, SSC batch 2012. I have been an International Mathematical Olympiad (IMO) contestant from Bangladesh from 2011 to 2014 [1]- currently holding the ...
- Tue Dec 23, 2014 12:45 pm
- Forum: Number Theory
- Topic: Equation On Sum Of Divisor
- Replies: 2
- Views: 3077
Re: Equation On Sum Of Divisor
Hint/ideas for the second solution? Because after finding the one liner, there are too many ways to take on this.
- Thu Dec 04, 2014 9:08 pm
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO National 2013: Primary 2, Junior 1
- Replies: 11
- Views: 11580
Re: BdMO National 2013: Primary 2, Junior 1
That was because I edited the post. Forgot to clarify that part, sorry.
- Thu Dec 04, 2014 9:06 pm
- Forum: News / Announcements
- Topic: Next Olympiad
- Replies: 4
- Views: 10286
Re: Next Olympiad
Yes you can, and no, they can't.
- Mon Nov 24, 2014 8:51 pm
- Forum: Number Theory
- Topic: function for quadratic residue
- Replies: 2
- Views: 3058
Re: function for quadratic residue
This question is meaningless without fixing a proper range for $f$ - for example, every $a$ satisfies the conditions if $f(x)=\sqrt {x+a}$.
- Sun Oct 26, 2014 9:05 am
- Forum: Computer Science
- Topic: Hackers again
- Replies: 11
- Views: 25564
Re: Hackers again
Download and scan your PC with one of these:
1. Spybot search and destroy http://www.safer-networking.org/mirrors/
2. Malwarebytes anti-malware tools http://www.malwarebytes.org/mwb-download/
That should be enough.
1. Spybot search and destroy http://www.safer-networking.org/mirrors/
2. Malwarebytes anti-malware tools http://www.malwarebytes.org/mwb-download/
That should be enough.
- Thu Oct 23, 2014 6:11 pm
- Forum: News / Announcements
- Topic: Combinatorics Workshop: Day 1 (04.12.13)
- Replies: 7
- Views: 13125
Re: Combinatorics Workshop: Day 1 (04.12.13)
Which one, and which part was the problem? They are discussed quite comprehensively here. I don't think we can do any better if you do not point to a specific part of the examples.
- Wed Oct 22, 2014 7:59 pm
- Forum: Secondary Level
- Topic: Functional divisibility
- Replies: 3
- Views: 3857
Re: Functional divisibility
$f^{100}(n) = 3^{100}(n+1)-1$, and if the proposition is correct this too implies $3|1$.
Any corrections, Mim?
Any corrections, Mim?
- Tue Oct 21, 2014 10:16 am
- Forum: Algebra
- Topic: (Angle)^(Side)[Inequality]
- Replies: 7
- Views: 6009
Re: (Angle)^(Side)[Inequality]
This function is concave for $x \in \left (0, \frac \pi 2 \right )$ and convex for $x \in \left ( \frac \pi 2 , \pi \right )$.
- Mon Oct 20, 2014 11:16 pm
- Forum: Algebra
- Topic: (Angle)^(Side)[Inequality]
- Replies: 7
- Views: 6009
Re: (Angle)^(Side)[Inequality]
On which function?