Search found 441 matches
- Wed Dec 22, 2010 4:46 pm
- Forum: Astronomy & Astrophysics
- Topic: Weather Forecast
- Replies: 8
- Views: 6038
Re: Weather Forecast
They have weather predictions; but of course they are usually wrong. So, they have control centers from where they can control the probe/robot just like a remote controlled plane. I don't think there is any "biggest" problem. There are lots of small problems and engineering details, all of which nee...
- Wed Dec 22, 2010 3:09 am
- Forum: Algebra
- Topic: Inequlities defination.
- Replies: 8
- Views: 5675
Re: Inequlities defination.
$9R^2 \ge a^2+b^2+c^2$ and $9R^2 \nless a^2+b^2+c^2$ are the same. I am not sure what you mean by "definition" of the statements. The second part of your question is answered by the definition of real numbers. By definition, for any real number $a$ and $b$ either $a \leq b$ or $b \leq a$. So, at lea...
- Tue Dec 21, 2010 6:26 am
- Forum: Physics
- Topic: Dependance of "g"
- Replies: 51
- Views: 26130
Re: Dependance of "g"
If you change $m$ then $F$ also changes proportionately and thus $g$ remains unchanged.
- Tue Dec 21, 2010 3:18 am
- Forum: Astronomy & Astrophysics
- Topic: গ্রহ নক্ষএ
- Replies: 25
- Views: 33118
Re: গ্রহ নক্ষএ
Planet's are not part of stars and Earth was never part of the sun. A star system is formed from a gas cloud. When a part of the cloud becomes very dense, and collapses due to gravity and starts fusion, it becomes a star. Planets are formed from nearby (but different) regions of the cloud where the ...
- Mon Dec 20, 2010 6:06 pm
- Forum: News / Announcements
- Topic: Posting BDMO 2013 problems: ZERO tolerance!
- Replies: 7
- Views: 14155
Posting BDMO 2013 problems: ZERO tolerance!
Hi everyone; as you all know the divisional olympiads have started. Good luck to all participants. Please carefully note that it is forbidden to discuss any problems from the divisional Olympiads of this year before January 25, 2012. Doing so will disqualify you from BDMO and ban you from the forum....
- Mon Dec 20, 2010 6:05 pm
- Forum: Higher Secondary Level
- Topic: Matrix
- Replies: 13
- Views: 8398
Re: Matrix
এইটা কি transpose এর বাংলা? আগে কখনো শুনি নাই। কই পাইলা?
যাই হোক, আমি জানতে চাইসিলাম, transpose এর সংজ্ঞা।
যাই হোক, আমি জানতে চাইসিলাম, transpose এর সংজ্ঞা।
- Mon Dec 20, 2010 3:06 pm
- Forum: Social Lounge
- Topic: Favorite problem/theorem
- Replies: 12
- Views: 7948
Re: Favorite problem/theorem
ওহ! ফার্মার শেষ উপপাদ্য। যদিও জিনিসটা মোটামুটি উপযোগহীন; কিন্তু পৃথিবীর গণিতবিদদের শতাধিক বছর ধইরা ভুগাইতে পারসে।
- Mon Dec 20, 2010 2:17 am
- Forum: Introductions
- Topic: Introduction
- Replies: 2
- Views: 2968
Re: Introduction
স্বাগতম। আশা করি ফোরাম তোমার কাজে লাগবে।
- Mon Dec 20, 2010 2:15 am
- Forum: Higher Secondary Level
- Topic: Matrix
- Replies: 13
- Views: 8398
Re: Matrix
$A$ and $A^T$ are not the same.
Let's go step by step. What is your definition of transpose matrix?
Let's go step by step. What is your definition of transpose matrix?
- Sun Dec 19, 2010 4:31 am
- Forum: Geometry
- Topic: Silly Questions
- Replies: 2
- Views: 3172
Re: Silly Questions
Euclidean geometry is plane geometry. There is no such thing as Euclidean proof.