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#77 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-13 09:31:40

Anthony.R.Brown wrote:

To Sekky

Is the above ENGLISH!!

Your attitude absolutely stinks, you're going to end up failing at everything you do if you won't admit your mistakes, especially when the counter-proof is staring you right in the face. Maybe in a thousand years when you finally grow up you'll be able to discuss some vaguely convtroversial maths, this is trivially obvious to anyone with a basic understanding of calculus.

#78 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-12 11:26:14

Anthony.R.Brown wrote:

To Sekky

Quote: " start accepting basic facts about field theory "

A.R.B

I am more than sure!! the only field theory you really know about! is being in a field! with field mice!..

You are a child, good look getting a seat at any academic establishment with that attitude.

Also, your lack of knowledge will contribute to your academic failure, have fun!

#79 Re: Help Me ! » Natural Number » 2007-03-12 00:39:07

Use the natural numbers as the group you're operating on, and only use operations that will form a group under the naturals

(Silly question)

#80 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-11 02:25:12

Anthony.R.Brown wrote:

To Sekky

A.R.B

when the apple falls on your head! you may wake up!! but untill then! take notes from someone who knows more then you!

Then take notes from me, I'm a professional, you're not, and I would rarely ever say this to an aspiring mathematician, but learn your place. You aren't as good as me, and you're years from ever reaching that level, and if you don't shut up and start accepting basic facts about field theory, you will never reach that level.

#81 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-11 01:19:22

Anthony.R.Brown wrote:

To Sekky

so just SHUT you up in one big swoop!

you will find! they must both equal! Infinite Recurring ( n ) = n because! ( n ) will always = n

Circular and fallacious

Just what exactly do you hope to gain by kidding yourself into thinking you're right? Or do you actually believe you're some enlightened high school child who understands everything on a level nobody else does? Get a clue, you haven't discovered something profound, in fact, you have to take at least an extra few steps to catch up with the rest of the muppets your age. It is YOUR logic that is backwards, and it is YOU that needs to start thinking. We can see your logic fails from outside it, you can't see it fails because you're stuck inside it and your little brain can't comprehend that it's circular.

#82 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-11 01:09:10

Anthony.R.Brown wrote:

can you give us the same value?  with two real value decimal expansions.?

...so give them both different names, they'll still be the same value

call them "stupid" and "moron", accept that they have the same numerical value, and how you write them in text doesn't make a blind bit of different to how you use them in practise.

#83 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-11 01:04:17

Anthony.R.Brown wrote:

To Sekky

Quote:

" Wrong, any terminating rational expression has two real valued decimal expansions "

A.R.B

an expression! such as INFINITE/RECURRING 0.9 can only have one Value! if there were

" two real valued decimal expansions ? " then there would be a Contradiction!!

They are the same value, with two real value decimal expansions.

I have a challenge for anybody reading this thread, find me somebody worse at maths than this guy.

#84 Re: Help Me ! » Proof » 2007-03-11 00:43:33

quackensack wrote:

Can't one just say:

If AX=0 has the trivial solution, then A is row equivalent to the identity matrix:

(1 0 0)
(0 1 0)
(0 0 1)

The inverse of the identity matrix is itself.  And thus it is nonsingular.

Thus, A has rank n. 

Because the identity matrix is equal to A, then A has rank n.

Sure

btw, the solution (or degree of solution) to AX=0 is called the Kernel of the homomorphism.

#85 Re: Help Me ! » Proof » 2007-03-10 14:50:32

quackensack wrote:

Thanks for all your input, guys!

I was wondering - is there a way to do it without using the nullity theorem?  I haven't about the concept of linear dependence in my class (as far as I know, that is). 

A friend told me that I can do this proof by putting a matrix A in row-reduced echelon form.  If doing this yields a matrix with at least one non-zero entry in each row, then the only solution to AX=0 is trivial.  This , in turn, is the definition of rank n if A is an n by n matrix.

I guess where I'm stuck is...how does one row-reduce the matrix A without knowing what it is?

It's the other way around, if you obtain a row of all zeros when it means one row was a linear combination of the other rows, hence not all rows are linearly independent. If this is true, then there will be infinitely many solutions to AX=0, because it will depend on less rows if you catch my drift. The number of rows of zeros is the kernel of the morphism, the number of non-zero rows is the rank.

#86 Re: Help Me ! » What is 7+9? » 2007-03-10 13:44:33

News just in: 7+9 = 16

#87 Re: Help Me ! » Proof » 2007-03-10 13:23:37

http://en.wikipedia.org/wiki/Rank-nullity_theorem

That should help

Informally, if your kernel is zero (ie the morphism never fails injection), then the rank must be the length of the matrix, because all columns will be linearly independent and therefore the morphism will always be injective.

#88 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-10 04:51:23

( 1 ) If any Number Starts or has a Zero followed by a Decimal point at the beginning! it will always be < 1 and <>  1 if no additional Math is applied to the Number!

Wrong, any terminating rational expression has two real valued decimal expansions.

Edit: From Wikipedia's 0.999 page: "every non-zero, terminating decimal has a twin with trailing 9s".

The numbers are identical, please go and study something you can't break, like a manhole cover subject like sociology.

#89 Re: Help Me ! » Small Math Grammar Question » 2007-03-10 00:54:40

If you think about it

So they can't all be terms.

#90 Re: Help Me ! » What is 7+9? » 2007-03-09 09:48:44

Sekky wrote:
lil_tomboysk8 wrote:

how is it 16 since there is no 9. 7 ate it. Is the answer no solution?

No, the answer is 16

Listen to this guy

#91 Re: This is Cool » 0.9999....(recurring) = 1? » 2007-03-08 23:49:11

Actually he has a point, you should be constructing a tuple, not a set.

#92 Re: Help Me ! » What is 7+9? » 2007-03-08 23:44:26

lil_tomboysk8 wrote:

how is it 16 since there is no 9. 7 ate it. Is the answer no solution?

No, the answer is 16

#93 Re: This is Cool » 2424[b]2[/b]4242 in [math]\pi[/math] » 2007-03-08 23:42:50

Devanté wrote:

According to my memory of pi, that should be 8214808651 32823 06647. wink

I didn't use any mnemonics for memorising e or pi. You'll all find it hard to actually believe me, but it becomes very, very simple when you just try to memorise 4 digits at a time. Try and memorise a '6' digit group as a marker. It helps.

That is correct

...093844609550582231725359408238481117450...

#94 Re: Maths Teaching Resources » Evaluating Postfix Notation Primer » 2007-03-08 13:53:02

kylekatarn wrote:

Creation of a postfix parser is an interesting task for those who are interested in Compilers & Language Processing wink

So is an infix to postfix converter for the same interest. I might write a primer for the shunting yard algorithm sometime over the weekend

#96 Re: Dark Discussions at Cafe Infinity » Where is your dream place to live in? » 2007-03-07 12:58:12

Physicists admit the possibility, like the admit the possibility of God, but neither can be experimented upon and neither can be determined to be true or false, so they don't concern themselves with it. Well...the reputable ones.

#97 Maths Teaching Resources » Solving Cubic Equations Primer » 2007-03-07 12:54:24

Sekky
Replies: 1

http://www.stylebucket.co.uk/primers/Cu … ations.pdf

Before today I'd never actually solved a cubic equation, at least not algorithmically, but I saw it in a book today so I thought why not sit down and teach myself it, and write a primer. Feedback would be appreciated, thanks.

#98 Maths Teaching Resources » Evaluating Postfix Notation Primer » 2007-03-07 12:53:00

Sekky
Replies: 3

http://www.stylebucket.co.uk/primers/Po … tation.pdf

I kinda like this algorithm, and sometime we can get so weighed down in heavy math we forget some of the more semantic ideas, anyway tell me what you think.

#99 Re: Help Me ! » I Need Help Bad!!! » 2007-03-07 10:03:35

What's wrong with, y'know, learning the definitions?

#100 Re: Help Me ! » Math Help » 2007-03-07 04:40:45

mathsyperson wrote:

A good computer probably wouldn't actually take too long to find the exact value of that, the problem is how it would display it to you.

9000! contains approximately 30000 digits.

and I bet like half of them are zeros

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