Heartland

emilystrange wrote:

randdebiel² wrote:

emilystrange wrote:i did it! and things are much better now!

except for this maths assignment....

good luck, honey

maths :drool:
can I be of any assistance?
@DI: good luck :worship:

yes, tell me what to do with adding numbers 5 and 7 in diff arrangements.. its an investigation. apparently. would i be right in thinking its a sequence thing?

euh, I don't understand what you mean?maybe my english isn't good enough?

Don't worry dude. English is my first language and I didn't understand it!

I think she means "what numbers can you produce that way...." to which the answer would be any number since 5 and 7 are relatively prime...but I'm not sure though...(but then you'd have to have the possibility to substract too, not only adding....)

Oh, right so like
5+5+5-7-7=1
7-5=2
5+5-7=3
7+7-5-5=4
5=5
5+5+5+5-7-7=6
7=7
...
etc.

yup...

the thing being of course, you don't have to do them all by hand, because if you can make 1=5+5+5-7-7
it means you can make any number n by saying
n=n*1=n*5+n*5+n*5-n*7-n*7

Well, yes, but that's cheating

It's more fun to try to find the shortest for any given number.

Jeez, I am a geek, finding maths fun!

markfiend wrote:Well, yes, but that's cheating

It's more fun to try to find the shortest for any given number.

Jeez, I am a geek, finding maths fun!

hey,I'm a mathematician, if there's a geek in here that would be me

well, in that case you can make imaginary numbers:

sq. root(5+5+5+5-7-7-7) = i

5*7+7 = 42

meaning of life, universer and everything.

Isn't multiplication cheating?

@lazcorp: you can't make irrational numbers though.

markfiend wrote:Isn't multiplication cheating?

only on macs

markfiend wrote:@lazcorp: you can't make irrational numbers though.

*ahem*

sq. root (7-5)

easy (if I remember correctly...)

markfiend wrote:Isn't multiplication cheating?

a&hem 5*x =x+x+x+x+x :p

yes, I know you knew that

lazarus corporation wrote:sq. root (7-5)

Bollocks

Transcendental numbers then.

Make pi.

markfiend wrote:

lazarus corporation wrote:sq. root (7-5)

Bollocks

Transcendental numbers then.

(after a quick check on google!):

(7-5) to the power of the sq. root of (7-5) is a transcendental number (it's called the Gelfond-Schneider Constant)

markfiend wrote:Make pi.

(5+5+5+7) / 7

that's pretty close.

markfiend wrote:Make pi.

sorry

@ lazcorp: Bugger. You win

But 22/7 for pi is pathetic only the third decimal.

(((7x7)+5+5+5+7)x5)/(((7+7)x7)+5+5+5) is accurate to 6 decimals!

@ hal: You'll be needing your coat?

this is getting freaky

markfiend wrote: Make pi.

my previous avatar would have been good for that one....

markfiend wrote:@ lazcorp: Bugger. You win

But 22/7 for pi is pathetic only the third decimal.

(((7x7)+5+5+5+7)x5)/(((7+7)x7)+5+5+5) is accurate to 6 decimals!

do you think that answered emilystrange's question?

lazarus corporation wrote:do you think that answered emilystrange's question?

Probably not.

By the way, do you think moonchild minds us hi-jacking her thread with this crap?

markfiend wrote:

lazarus corporation wrote:do you think that answered emilystrange's question?

Probably not.

No.. i'm only allowed to add. the q is to explore numbers that can be made this way, and ones that can't.
and then extend by using different pairs of numbers.
Don't tell me the answer, i have to do it myself even if its my worst nightmare. just tell me if i'm on the right track with sequencing!

you probably are....I'll ry to solve it this afternoon just to be sure....