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Type: Posts; User: Sam Finch

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by Sam Finch
Replies
2
Views
476

### we use this idea for the second part of your...

we use this idea for the second part of your question to show

http://161.58.186.97/attachment.php?s=&postid=650462

hope this helps

by Sam Finch
Replies
2
Views
476

### The point about e is that ...

The point about e is that

http://161.58.186.97/attachment.php?s=&postid=650460

e^x is the only function that differentiates to make itself, which makes it very important in solving...

by Sam Finch
Replies
20
Views
641

### 3 + (-3) = 0 so as anything * 0 = 0 3 * (3...

3 + (-3) = 0

so as anything * 0 = 0

3 * (3 + -3) = 0 = (3 + -3) * -3

multiplying out
(3 * 3) + ( 3 * -3) = ( 3 * -3) + ( -3 * -3)
4. ## Thread: 'arry potta an' da stone fingy

by Sam Finch
Replies
28
Views
688

### The book deals with the phillosophers stone from...

The book deals with the phillosophers stone from alchemy, which turns metal into gold.

I think the reason that the Americans changed the title is that "Philosophers Stones" is also a term used for...
5. ## Thread: This is Pissing me off

by Sam Finch
Replies
2
Views
483

### This is Pissing me off

Can anyone remember the proofs of these Identities?

Sin(a+b) = Cos(a)Sin(b) + Sin(a)Cos(b)
Cos(a+b) = Cos(a)Cos(b) - Sin(a)Sin(b)

by Sam Finch
Replies
45
Views
1,585

### Hmm, Seems I didn't write the proof out very well...

Hmm, Seems I didn't write the proof out very well at all. Here's a revised version.

And let that be a lesson to all of you who post without reading what you've written.

Guv and destined...
7. ## Thread: An old topic revisited

by Sam Finch
Replies
4
Views
534

### Forgot to attatch

Forgot to attatch
8. ## Thread: An old topic revisited

by Sam Finch
Replies
4
Views
534

### I don't think anyone will ever understand...

I don't think anyone will ever understand transfinite numbers, mathematicians just learn to accept the axioms and understand their implications. What happens is that when you first learn the rules...

by Sam Finch
Replies
45
Views
1,585

### I got my statement a bit mixed up, I've corrected...

I got my statement a bit mixed up, I've corrected it now.

by Sam Finch
Replies
45
Views
1,585

### Beachbum, The proof of Simon's original...

Beachbum,

The proof of Simon's original statement is as follows.

consider a string of n digits, what proportion of them contain the number 3?

we assign F(n) to be the proportion of strings...
11. ## Thread: An old topic revisited

by Sam Finch
Replies
4
Views
534

### Actually you've provided the first half of a very...

Actually you've provided the first half of a very nice proof that 0.999 in base 10 is equal to 0.jjjjjj... in base 20. You just got some sums wrong.

0.999...(Base10) =

(Base10) 0.9 ...
12. ## Thread: The Rain Debate...

by Sam Finch
Replies
46
Views
1,622

My guess is stand still. Then only your head and shoulders get wet, If you move around your front gets wet but your head and shoulders don't get any dryer.
13. ## Thread: Program required to solve this puzzle.

by Sam Finch
Replies
4
Views
662

### An extra atatchment

An extra atatchment
14. ## Thread: Program required to solve this puzzle.

by Sam Finch
Replies
4
Views
662

### Chrisf has got it, and it's not that hard to...

Chrisf has got it, and it's not that hard to prove it.

Say we have a game G(n) where there are n+1 bets remaining and you have not lost yet (we do it this way so that G(0) is the trivial game...
15. ## Thread: Friend Functions in Namespaces.

by Sam Finch
Replies
5
Views
395

### Thanks parksie. I didn't realise yu could do...

Thanks parksie.

I didn't realise yu could do that for classes.
16. ## Thread: Friend Functions in Namespaces.

by Sam Finch
Replies
5
Views
395

### Friend Functions in Namespaces.

I'm having a bit of a declarations Problem and I can't seem to get the right order of declarations.

I have a class, "DisplayTree" which represents various things to be drawn on an HDC.

The...
17. ## Thread: RSA, Big Primes.

by Sam Finch
Replies
6
Views
794

### RSA, Big Primes.

I'm interested in using a variant on RSA for security in distributing some files.

The files only run using a viewer program, and are purchased over the web.

The way I'm thinking of...
18. ## Thread: (-n == ~n + 1)?????

by Sam Finch
Replies
11
Views
655

### the way this works is that -1 in binary is...

the way this works is that -1 in binary is 11111111.

and for any binary number x x + ~x = 11111111.

because for any bit in x, the corresponding bit in ~ is the opposite, so if the x bit is 1...
19. ## Thread: Line & Circle?

by Sam Finch
Replies
2
Views
396

### The way to do this is to find a polynomial in y...

The way to do this is to find a polynomial in y for which the line crosses the circle at it's roots, eg

http://161.58.186.97/attachment.php?s=&postid=413425

we now need to find the values of k...
20. ## Thread: Log of numbers

by Sam Finch
Replies
1
Views
411

### .http://161.58.186.97/attachment.php?s=&postid=378...

.http://161.58.186.97/attachment.php?s=&postid=378938
use the sequence to evaluate ln(x/(2^n)), although it's an invinite series it converges pretty quickly so you only need to do the first 10-20...

by Sam Finch
Replies
4
Views
300

### There is such a thing in football, it's called a...

There is such a thing in football, it's called a shoulder barge, basicly if someone's got the ball you can hit them off it with your shoulder (it has to be shoulder to shoulder though, it's not used...

by Sam Finch
Replies
2
Views
456

### Thanks a lot, that looks really helpful.

Thanks a lot, that looks really helpful.

by Sam Finch
Replies
2
Views
456

### Cayley-Hamilton Theorum

Does anyone know the proof of Cayley-Hamilton Theorum? (That a matrix always satisfies its Characteristic equation) or where I can find one?

Thanks.

by Sam Finch
Replies
12
Views
491

Vote now.

by Sam Finch
Replies
9
Views
445

Beer.
26. ## Thread: Are the ancients gods passe?

by Sam Finch
Replies
11
Views
593

### There are reconstructionist faiths which still...

There are reconstructionist faiths which still worship the old gods, mainly based on the work of a guy called Aleister Crowley, the most prominent one is called Wicca, which is a revival of the ways...
27. ## Thread: Floating Point Rounding Errors

by Sam Finch
Replies
2
Views
705

### yeah, a fraction a/b can be expressed as a...

yeah,

a fraction a/b can be expressed as a nonterminating decimal if and only if b can be expressed as an integer power of 2 multiplied by an integer power of 5.

by Sam Finch
Replies
22
Views
744

### Here's a difficult one. What does the cash...

Here's a difficult one.

What does the cash register say on the opening sequence of every Simpson's episode.

Clue:

It's not NRA-4-Ever

by Sam Finch
Replies
17
Views
580

### I've actualy forgotten what it was now, but I'm...

I've actualy forgotten what it was now, but I'm pretty sure it wasn't any of those things. PS Harry's a sick bastard.

by Sam Finch
Replies
17
Views
580

### It's not a racoon, or any form of rodent, but it...

It's not a racoon, or any form of rodent, but it is bigger than a bread box.

by Sam Finch
Replies
17
Views
580

### I spy

With My little eye, something beginning with r.
32. ## Thread: Wierd complex number question.

by Sam Finch
Replies
6
Views
781

### nope, that'd be too easy.:(

nope, that'd be too easy.:(
33. ## Thread: Wierd complex number question.

by Sam Finch
Replies
6
Views
781

### This is a bit of a wierd one, I'm looking for...

This is a bit of a wierd one,

I'm looking for a function that will convert a complex number to its real and imaginary parts, using only complex number operations.

So if you imagine I had a...

by Sam Finch
Replies
2
Views
330

### Poll: What do you get if you pour boiling water down a...

What do you get if you pour boiling water down a rabbit hole?

Hot cross bunnies!!!!
35. ## Thread: if you were................

by Sam Finch
Replies
30
Views
722

### You don't need to run the compiler on the OS,...

You don't need to run the compiler on the OS, just create the exe files and the boot disk. you don't need anything on the other computer at all, just your OS.
36. ## Thread: if you were................

by Sam Finch
Replies
30
Views
722

### No, you can buy it from microsoft.

No, you can buy it from microsoft.
37. ## Thread: if you were................

by Sam Finch
Replies
30
Views
722

### you could write the compiler in VB if you wanted....

you could write the compiler in VB if you wanted. It just has to write exe files.
38. ## Thread: TIC TAC TOE RIDDLE (Kinda)

by Sam Finch
Replies
22
Views
1,305

### Took me a couple of minutes. I got Ked's answer...

Took me a couple of minutes. I got Ked's answer rotated anticlockwise 90 degrees.

Next question, how many solutions are there?
39. ## Thread: Ten Stack Riddle (This is a good one)

by Sam Finch
Replies
4
Views
914

### Take 1 from the first pile, 2 from the second 3...

Take 1 from the first pile, 2 from the second 3 from the 3rd and so on. weigh all those coins together and you will get 55 whole grams and x*0.1 grams left over. the fake coins are in the xth pile.
40. ## Thread: ALBERT EINSTEIN'S RIDDLE

by Sam Finch
Replies
27
Views
1,515

### I never daid you did, I merely said that people...

I never daid you did, I merely said that people would thank you for doing it.
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