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#1 This is Cool » A Rice Farmer's Proof of Euler's Theorem » 2013-02-24 05:26:54

Replies: 0

#2 Help Me ! » Vector Spaces! » 2013-02-24 05:13:58

Replies: 3

Let V be a vector space and A,B be subsets of V .

prove that:  span (A U B) = span (A) + span (B)

looks pretty obvious but dont know how to prove it using math

#3 Re: Help Me ! » probabilty distribution » 2012-12-04 08:53:55

Thanks for the links. Khan academy has some really good videos on statistics.

#4 Help Me ! » probabilty distribution » 2012-11-29 19:39:17

Replies: 24


I want to simulate a real world problem. People can enter a bank at any time between 8 am  and 5 pm in the evening. More people are likely to come in the peak morning hours. So how do I get a distribution function for such a case.

I am looking for general ways of tackling this problem and not for a particular solution. I know basic probability but have very limited knowledge in statistics (know just basics like normal distribution, mean, variance)

And good to be back here after a long time smile

#6 Re: Exercises » Is this cool with you? » 2011-07-08 05:05:17

Yes, I used Geogebra too!

I have never noticed a heart like structure forming in my cup.
I will try to see that when I have tea tomorrow morning. smile

#8 Re: Exercises » Is this cool with you? » 2011-07-07 21:20:17

And there will also be two small traingles.

#9 Re: Exercises » Is this cool with you? » 2011-07-07 21:00:11

I have just edited it. Area took more time to do.

#10 Re: Exercises » Is this cool with you? » 2011-07-07 20:26:12

Hi gAr, I am getting an answer that is very similar to yours

#12 Re: Formulas » Perpetual calendar » 2011-07-07 02:15:12

Hi gAr,

If we consider 2 cases, the years 400 and the year 2000. then y would be the same for both cases. But that would be a contradiction right?

#13 Re: Help Me ! » Modulo operation » 2011-07-07 02:06:15

Thank you, bobbym.
I learnt a new thing today!

#14 Re: Help Me ! » Modulo operation » 2011-07-07 02:01:00

So in the other thread(, y = year (mod 400) means y is the remainder when the year is divided by 400, right?

#15 Help Me ! » Modulo operation » 2011-07-07 01:55:08

Replies: 5


I have a question - I have just looked up the internet for modulo operation.

So is
1)2000 mod 400 = 0
2)2004 mod 400 = 4?

#16 Re: Formulas » Perpetual calendar » 2011-07-07 01:04:34

In leap years February makes its contribution of one extra day - the 29th of Feb.

#18 Re: Help Me ! » Programming and Computing » 2011-07-05 04:27:36


My engineering college will start within a month now. I saw Sage and it was a very large file. With my current internet speed I will not be able to finish downloading it before my college starts big_smile But I am very sure that the same file will be available inside the college. Hopefully I will also be able to get some decent reference book for Sage and C++ in the library there.

You have given me more options now and confused me a little. Thank you!

I will have a look at that book(TAOCP) in the future.

#19 Re: Help Me ! » Programming and Computing » 2011-07-05 02:43:08

Virtualbox sounds cool. But I dont think I will need it in the near future.
You guys know so much about computers!

#20 Re: Help Me ! » Programming and Computing » 2011-07-05 02:16:12

Hi gAr,

Is GNU C fine for someone who uses Windows XP?

#21 Re: Help Me ! » Programming and Computing » 2011-07-05 02:08:55

Okay. I will do that ASAP!
And which compiler should I use that is compatible with XP and is free too!

#22 Re: Help Me ! » Programming and Computing » 2011-07-05 01:55:34

Thanks for your inputs, bobbym and gAr.
I had one more question - Which compiler should I use? I have Windows Vista Home Basic. But I may change it. So should I go for XP or 7?

#23 Re: Help Me ! » Programming and Computing » 2011-07-04 23:27:28

Thanks for that link. smile  I will need more time to read and understand the posts there
I will try to find the books that you have mentioned.
Thanks again!

#24 Re: Help Me ! » Programming and Computing » 2011-07-04 22:51:49

Hi bobbym and gAr,

Thank you.
I have decided to start with C++ because it will be used in our college more widely than other languages.
Do you know of any good book for introduction to C++?

#25 Re: Help Me ! » Programming and Computing » 2011-07-04 06:34:48

Hi Bobbym,

Games? Utilities? Or Mathematical programming?

All of them fascinate me. But isnt there something that they have in common?
I would like to make simple applications like a simple calculator or something.
Or like writing a programme that gives all permutations of 'abcde'.

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