Search found 751 matches
- Fri Jan 20, 2012 10:24 pm
- Forum: Social Lounge
- Topic: একটি প্রস্তাব এবং সকলের সহযোগিতা।
- Replies: 12
- Views: 8095
Re: একটি প্রস্তাব এবং সকলের সহযোগিতা।
পত্রিকা ছাপানোর আইডিয়া সেই তানভীর ভাইদের আমল থেকে চলে আসছে। আমিও একসময় ভাবছিলাম করব...পরে ওইটা না করে ফোরাম বানাইছি। ইন্টারনেটের কোনকিছু ছড়িয়ে দেওয়া অনেক সহজ, কিন্তু সমস্যা হল আমাদের দেশে ইন্টারটে গণিত করবে এরকম মানুষ কম! আমি নিরুৎসাহিত করছি না, কিন্তু পত্রিকার ক্ষেত্রে কিকি জিনিস লাগবে এগুলো ক...
- Wed Jan 18, 2012 12:38 am
- Forum: Geometry
- Topic: geometry unbound
- Replies: 3
- Views: 2900
Re: geometry unbound
As far as I understand this is asking either for the ratio of those bisectors OR asking the length of them separately. As the side lengths are not given I am assuming they are asking for the ratio.
- Sun Jan 15, 2012 7:36 am
- Forum: Geometry
- Topic: A little help.....
- Replies: 6
- Views: 4049
Re: A little help.....
Could you please explain how $\angle APQ=\angle BPQ$?
- Wed Jan 11, 2012 7:05 pm
- Forum: Number Theory
- Topic: Divisibility of a sequence by 10100
- Replies: 2
- Views: 2449
- Wed Jan 11, 2012 6:57 pm
- Forum: Geometry
- Topic: Determining the volume of a pyramid
- Replies: 6
- Views: 4255
Re: Determining the volume of a pyramid
If the height you marked is the height of the pyramid then your diagram is not necessarily correct in all cases. I mean usually the pedal point of the perpendicular line from $O$ should be inside the plane $ABC$.
- Wed Jan 11, 2012 6:52 pm
- Forum: Astronomy & Astrophysics
- Topic: Age of Light
- Replies: 4
- Views: 4616
Re: Age of Light
Yeah, your question is not clear to me. If you mean in a certain frame how much time has elapsed for light to travel a distance $d$ then it is simply $t=d/c$. Also light's frame is not quite well defined, because if light is moving at speed $c$ with respect to me, then that will mean I am moving wit...
- Wed Jan 11, 2012 3:24 pm
- Forum: Geometry
- Topic: Determining the volume of a pyramid
- Replies: 6
- Views: 4255
Re: Determining the volume of a pyramid
I didn't quite get what you wanted to say...you better post a diagram or write with labels (like the cevian AX of triangle ABC etc.)
- Wed Jan 11, 2012 3:21 pm
- Forum: H. Secondary: Solved
- Topic: Dhaka Higher Secondary 2011/1
- Replies: 3
- Views: 9455
Re: Dhaka Higher Secondary 2011/1
Try to search before posting: viewtopic.php?f=41&t=472
Also most of the divisional problems are nicely categorized in those sub forums: viewforum.php?f=41
Also most of the divisional problems are nicely categorized in those sub forums: viewforum.php?f=41
- Wed Jan 11, 2012 3:16 pm
- Forum: Number Theory
- Topic: chinese remainder theorem
- Replies: 2
- Views: 2629
Re: chinese remainder theorem
First of all, we can divide the second congruence by $2$ to get $2x \equiv 1 \pmod{3}$. Then using chinese remainder theorem you end up with a family of solution mod 105. From there you get two incongruent family of solutions.
- Wed Jan 11, 2012 12:16 am
- Forum: Geometry
- Topic: Determining the volume of a pyramid
- Replies: 6
- Views: 4255