34
   

The worlds first riddle!

 
 
TTH
 
  1  
Reply Wed 12 Dec, 2007 11:46 am
Tryagain wrote:
Lagrange's Four-Square Theorem states that every positive integer can be written as the sum of at most four squares. For example, 6 = 22 + 12 + 12 is the sum of three squares.

Given this theorem, prove that any positive multiple of 8 can be written as the sum of eight odd squares Question
I kept staring at this wondering how 6=(22+12+12)
6=46 Confused

Then I finally realized you meant 6= 2^2 + 1^2 + 1^2 (I think that is how you write 2 squared & 1 squared) which is 6=4+1+1
So, basically it comes down to 8(n + 1) I think.
0 Replies
 
mismi
 
  1  
Reply Wed 12 Dec, 2007 12:50 pm
1 800 BENDOVER - Rolling Eyes
0 Replies
 
Tryagain
 
  1  
Reply Wed 12 Dec, 2007 05:39 pm
TTH:

So, basically it comes down to 8(n + 1) I think. Cool Cool


So do I...


Consider that 8a^2 = (4a^2 + 4a) + (4a^2 − 4a).
= (2a + 1)^2 + (2a − 1)^2 − 2.

So 8n = (2a + 1)^2 + (2a − 1)^2 + (2b + 1)^2 + (2b − 1)^2 + (2c + 1)^2 + (2c − 1)^2 + (2d + 1)^2 + (2d − 1)^2 − 8, and thus 8(n + 1) is the sum of eight odd squares; just as TTH said! Razz

Therefore, any positive multiple of 8 can be written as the sum of eight odd squares.


Miss mi can you please quit calling me; I want to dial out…Thank you! Laughing



The absolute value of a real number is defined as its numerical value without regard for sign. So, for example, abs(2) = abs(−2) = 2.

The maximum of two real numbers is defined as the numerically bigger of the two. For example, max(2, −3) = max(2, 2) = 2.

What is:
abs in terms of max Question
max in terms of abs Question
0 Replies
 
mismi
 
  1  
Reply Wed 12 Dec, 2007 06:08 pm
Miss mi can you please quit calling me

You should be so lucky Razz
0 Replies
 
TTH
 
  1  
Reply Wed 12 Dec, 2007 08:01 pm
mismi40 wrote:
Miss mi can you please quit calling me

You should be so lucky Razz
Good come back Cool
Laughing Laughing Laughing

Try
Not only do you talk weird, you do math weird too Laughing
0 Replies
 
markr
 
  1  
Reply Wed 12 Dec, 2007 11:13 pm
MAX ABS

[size=7]abs(x) = max(x, -x)
max(x,y) = (x+y)/2 + abs(x-y)/2
[/size]
0 Replies
 
TTH
 
  1  
Reply Wed 12 Dec, 2007 11:26 pm
Oh hi mark Very Happy
This is for ALL of you:
http://www.123greetings.com/view/7JN11212062609223
0 Replies
 
markr
 
  1  
Reply Thu 13 Dec, 2007 12:30 am
Howdy. Cool card!
0 Replies
 
mismi
 
  1  
Reply Thu 13 Dec, 2007 06:01 am
How Pretty!
0 Replies
 
TTH
 
  1  
Reply Thu 13 Dec, 2007 08:19 am
I am glad you liked it Very Happy
0 Replies
 
Tryagain
 
  1  
Reply Thu 13 Dec, 2007 08:43 am
Mark:

MAX ABS

abs(x) = max(x, -x) Cool
max(x,y) = (x+y)/2 + abs(x-y)/2 Cool Cool


To express max(x, y) in terms of abs function(s), consider x and y positioned on the real number line.

The midpoint of the line is ½(x + y).

To obtain max(x, y), we then need to add half the length of the line segment connecting x and y; that is, we must add ½(abs(x - y)).


Good to see you back; strange you and TTH should disappear at the same time! Rolling Eyes


TTH writes, "Try. Not only do you talk weird, you do math weird too"

Sorry about that, the system failed to recognize the notation.

I keep getting a violation warning when I try that link, however if Mark says it's ok and Miss mi thinks it's mighty purdy, then it must be good and I thank you for the thought. Razz




"You should be so lucky" Shocked

Fairy nuff Sad , I know I can never be that lucky Crying or Very sad , but then again, I have unlisted numbers; plus I have a floating goldfish Very Happy , you try to train a fish to swim upside down and see how difficult it is Laughing . Gotta go ….. it's the phone! :wink:




MRY IENAGRGS Question


BEND
DRAW
DRAW
DRAW Question


NMD Question


ITN Question
0 Replies
 
mismi
 
  1  
Reply Thu 13 Dec, 2007 09:58 am
Fairy nuff , I know I can never be that lucky , but then again, I have unlisted numbers; plus I have a floating goldfish , you try to train a fish to swim upside down and see how difficult it is . Gotta go ….. it's the phone!

You were the one that asked me to quit calling... Rolling Eyes Flush the fish Try.
0 Replies
 
Tryagain
 
  1  
Reply Thu 13 Dec, 2007 10:17 am
"You were the one that asked me to quit calling"

Ok, just keep it down to three times a night and no heavy breathing! Laughing


"Flush the fish Try." Shocked

Don't be so quick, I'm sure its just sleeping it off. I don't like to drink alone so I always give little Timmy a shot. I'll drop in a bicarb soda tab; yes, that should do the trick. Very Happy
0 Replies
 
TTH
 
  1  
Reply Thu 13 Dec, 2007 10:22 am
Tryagain wrote:

BEND
DRAW
DRAW
DRAW Question
bend over backwards
Tryagain wrote:
NMD Question
I dunna know, one Laughing
0 Replies
 
Tryagain
 
  1  
Reply Thu 13 Dec, 2007 10:45 am
TTH wrote;

NMD
"I dunna know (that) one"

Just change it! :wink:
0 Replies
 
mismi
 
  1  
Reply Thu 13 Dec, 2007 10:47 am
TTH wrote:
Tryagain wrote:

BEND
DRAW
DRAW
DRAW Question
bend over backwards
Tryagain wrote:
NMD Question
I dunna know, one Laughing


Oh wow...I should have gotten that one...I kept saying bend over drawers or something! Laughing Shocked
0 Replies
 
TTH
 
  1  
Reply Thu 13 Dec, 2007 11:08 am
Tryagain wrote:
TTH wrote;

NMD
"I dunna know (that) one"

Just change it! :wink:
okay, a doctor Laughing
0 Replies
 
TTH
 
  1  
Reply Thu 13 Dec, 2007 03:01 pm
http://www.liverpoolmuseums.org.uk/walker/exhibitions/heathrobinson/graphics/large/fairys_birthday.jpg
This is kinda Christmassy & there is a fairy in there for you.
Well, I figured since you like fairys and all.... Laughing
0 Replies
 
Tryagain
 
  1  
Reply Thu 13 Dec, 2007 05:42 pm
TTH:

BEND
DRAW
DRAW
DRAW = bend over backwards Cool Cool

My thanks to Ben Dover for that one!

"Well, I figured since you like fairy's and all...."

That drawing is real cute…thank you. I'm gonna print it out and frame it! Very Happy


Miss mi writes, "Oh wow...I kept saying bend over drawers or something!"

Can I get up now, my back is killing me! Laughing


Looking back; the summer of 2007 is no exception to the destruction that is wreaked by wildfires. Large portions of the West are being destroyed by lightning-sparked fires. Bryant Gumbel reported on the Today show that a fire in Mendocino, CA, covered 70,000 acres on its ninth day of burning, and the blaze doubled in size each of the previous days.

How many acres did the fire cover on the first day Question
0 Replies
 
TehMeh
 
  1  
Reply Thu 13 Dec, 2007 09:23 pm
Tryagain wrote:
Looking back; the summer of 2007 is no exception to the destruction that is wreaked by wildfires. Large portions of the West are being destroyed by lightning-sparked fires. Bryant Gumbel reported on the Today show that a fire in Mendocino, CA, covered 70,000 acres on its ninth day of burning, and the blaze doubled in size each of the previous days.

How many acres did the fire cover on the first day Question


Let x be the # of acres on the first day.
2x is second day and so forth.
2^8*(x)=70,000

x = approximately 273.44 acres.

Seems too easy though Confused
0 Replies
 
 

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