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#276 2012-12-09 20:29:57
- Agnishom
- Star Member
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Re: help me
I like them very much. However, I am asking whether the book would help me to solve them
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#277 2012-12-09 20:34:07
- bobbym
- Administrator
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Re: help me
Hi Agnishom;
The best way to learn anything is to solve problems. Dry lectures you will forget within a week, but a solved problem shows you how.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#278 2012-12-09 20:42:59
- Agnishom
- Star Member
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Re: help me
Hmm...
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#279 2012-12-09 21:14:07
- bobbym
- Administrator
Online
Re: help me
It is how gAr, anonimnystefy and I work.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#280 2012-12-09 21:37:47
- anonimnystefy
- Real Member
Online
Re: help me
You can take a look at the "Oh, oh, oh, merry analsis", "Expectation", " Generating functions!", and many more. Many of them started because I (but not only I) wanted to learn about knew topics. You will find that all of those threads consist only of problems and nothing but problems.
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#281 2012-12-09 21:47:31
- Agnishom
- Star Member
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Re: help me
What are these?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#282 2012-12-09 21:48:44
- anonimnystefy
- Real Member
Online
Re: help me
Various threads here on the forum.
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#283 2012-12-09 21:50:16
- Agnishom
- Star Member
Online
Re: help me
Oh! I forgot 
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#284 2012-12-09 21:56:30
- Agnishom
- Star Member
Online
Re: help me
What does the big O notation signify?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#285 2012-12-09 21:58:03
- bobbym
- Administrator
Online
Re: help me
Hi Agnishom;
There are many of these threads filled with good problems.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#286 2012-12-09 22:01:34
- Agnishom
- Star Member
Online
Re: help me
Hmm.. 
But what is the meaning of the big O?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#287 2012-12-09 22:16:04
- bobbym
- Administrator
Online
Re: help me
Hi;
The Big O notation is used to describe the limit of an algorithms performance as it approaches infinity or some other value.
wikipedia wrote:
big O notation is used to classify algorithms by how they respond (e.g., in their processing time or working space requirements) to changes in input size.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#288 2012-12-10 00:01:30
- Agnishom
- Star Member
Online
Re: help me
Any example of it?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#289 2012-12-10 01:08:53
- bobbym
- Administrator
Online
Re: help me
This is very simple and very watered down.
Supposing you wanted to add two two digit numbers. It would take you 2 additions to do it. If you had two four digit numbers it would take 4 additions. Notice as n ( the number of digits doubled the amount of work required also doubled. 4 additions to 2.)
We say that algorithm is linear and assign it O(n).
Now how about multiplication the way you were taught?
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#290 2012-12-10 01:33:43
- Agnishom
- Star Member
Online
Re: help me
I think multiplication should be linear too
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#291 2012-12-10 01:39:13
- bobbym
- Administrator
Online
Re: help me
Hi;
When you multiply two two digit numbers it takes 4 multiplications. When you two 4 digit numbers it takes 16 multiplications rather than the expected 8. When we triple the amout of digits 6 x 6 it takes 36 multiplications.
n
2 digits = 4 mults
4 digits = 16 mults
6 digits = 36 digits.
You can see that the relationship is n^2. We say that the operation of schoolboy multiplication is O(n^2).
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#292 2012-12-10 02:38:35
- mathgogocart
- Super Member
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Re: help me
bobbym wrote:
Hi Agnishom;
The best way to learn anything is to solve problems. Dry lectures you will forget within a week, but a solved problem shows you how.
what about a wet lecture? 
woosh! woosh! bye as I go to Kanto.
#293 2012-12-10 02:54:09
- Agnishom
- Star Member
Online
Re: help me
Yes...I see
Whats next?
Last edited by Agnishom (2012-12-10 02:55:38)
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#294 2012-12-10 03:05:54
- bobbym
- Administrator
Online
Re: help me
Hi;
Did you check out the thread anonimnystefy mentioned?
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#295 2012-12-10 03:08:55
- Agnishom
- Star Member
Online
Re: help me
Yes but I dont understand the problems over there
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#296 2012-12-10 03:10:22
- bobbym
- Administrator
Online
Re: help me
Can you say what is the part you do not understand?
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#297 2012-12-10 03:14:55
- Agnishom
- Star Member
Online
Re: help me
Okay but tomorrow 
Gotta sleep! Good Night!
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#298 2012-12-10 03:17:24
- bobbym
- Administrator
Online
Re: help me
Hi;
Okay, see you tomorrow.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#299 2012-12-10 09:06:39
#300 2012-12-10 09:09:59
- bob bundy
- Moderator
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Re: help me
hi Sarah,
How are you today?
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei