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Math
Topic Started: Aug 30 2009, 06:25 PM (1,055 Views)
chagi
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Timmeh,Sep 14 2009
12:36 AM
Not the same question

yes it is
doobie doo
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Timmeh
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Pomegranate,Sep 13 2009
09:49 PM
Timmeh,Sep 13 2009
11:29 AM
That it's impossible to set up a problem that gives you a length in terms of i!
you CAN state something in terms of i

Again, you cannot state a length in terms of i.
That will be all.

Chagi, nein.
x^2 = 25 isn't the same as solving for the side of a square (x) with an area of 25. The answers are, respectively:
1) x = +/- 5
2) x = 5
And there's a reason for that. There exists no such thing as a negative length (or imaginary length).
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Pomegranate
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Timmeh,Sep 14 2009
04:42 PM
Pomegranate,Sep 13 2009
09:49 PM
Timmeh,Sep 13 2009
11:29 AM
That it's impossible to set up a problem that gives you a length in terms of i!
you CAN state something in terms of i

Again, you cannot state a length in terms of i.
That will be all.

but... i just did...
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chagi
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Timmeh,Sep 14 2009
11:42 PM
Chagi, nein.
x^2 = 25 isn't the same as solving for the side of a square (x) with an area of 25. The answers are, respectively:
1) x = +/- 5
2) x = 5
And there's a reason for that. There exists no such thing as a negative length (or imaginary length).

Oh hey, the solutions are
x = 5
and an hypothetical
x = -5

I'll just let that word sink in for you;

hypothetical

read it a few times and you will soon realise that its true
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Timmeh
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It's actually a logical proven -5.
Addition and multiplication are defined such that -5 * -5 = 25. It's not any more hypothetical than the positive 5. There is no way to derive the length of a square with an area of 200i from first principles.

Anyway, I just spent a while doing this question for math homework, have a ball with it:
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Find the volume of the solid that lies inside both of the spheres
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and
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I hope the images for the equations stay up. If not, they're
x^2 + y^2 + z^2 = 4
and
x^2 + y^2 + z^2 + 4x - 2y + 4z + 5 = 0

Pom, I should have said you can't say a length in the form of a complex number (a + bi) where b can't simplify to 0. Better?
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Pomegranate
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yes.
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Liksmaskaren
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You are nerds.
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Pomegranate
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Liksmaskaren,Sep 16 2009
05:33 PM
You are nerds.

quiet you!
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The Swede
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No. This topic scares me! I feel so fucking dumb!
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DeProgrammer
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We are the epitome of nerd. Its quintessence, even! Bow before us, knave!

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chagi
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Timmeh,Sep 15 2009
09:27 AM
It's actually a logical proven -5.
Addition and multiplication are defined such that -5 * -5 = 25. It's not any more hypothetical than the positive 5. There is no way to derive the length of a square with an area of 200i from first principles.

Wait, what are you saying now? That length can be negative, or that it can't?

Oh, and that shit with the spheres... blargh
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Liksmaskaren
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Nerds are scary.
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Phlakes
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Two ridiculously easy proofs.

Given:

13x-2y=3
25x-11y=1

Prove: The solution to the system of equations is (1/3, 2/3)

AND

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Timmeh
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Did you have to choose to make a system with a bunch of fucking prime numbers? :|

The proof is just plugging them in though.
13/3 - 4/3 = 3 -> 13 - 4 = 9
25/3 - 22/3 = 1 -> 25 - 22 = 3



The line one...
Assume they're parallel.
If they are, <EXY = <XYF, so we need to show that.

<AXD = <BXE
<AXD + <DXE = pi
<BXE + <BXA = pi
<DXE = <BXA
<BXA = <EXY, I forget why, but they're opposite angles in intersecting lines.
<XYF = <DXE = <BAX = <EXY
<XYF = <EXY, QED
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s123i68
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Geeze...that's...a little disconcerting.

Uh...I can derive things...that's kinda cool, I guess...

But what you guys are doing confuses the crap out of me. That's what I get for being too lazy to read the first 3 pages. :P
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why do your balls look too big to me?
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