Liam
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 posted on 23/5/08 at 10:44 PM |
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Anyone else geeky enough to find this funny?
Maths joke...
Huh huh huh
Liam
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mistergrumpy
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| posted on 23/5/08 at 10:54 PM |
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Nope. Square route of minus 1? Don't get it
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Macbeast
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| posted on 24/5/08 at 12:27 AM |
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sq root -1 is an imaginary number.
Now, if the friend had been called Jay, it would have been obvious 
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ravingfool
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| posted on 24/5/08 at 06:25 PM |
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ETA, that's not a geeky joke anyway, it's just very high brow.
[Edited on 24/5/08 by ravingfool]
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t.j.
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| posted on 24/5/08 at 08:00 PM |
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That calculation is not possible, that's the joke.....
Please feel free to correct my bad English, i'm still learning. Your Dutch is awfull! :-)
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Macbeast
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| posted on 24/5/08 at 09:08 PM |
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I think the joke is - kids often have an imaginary friend. sqrt -1 is an imaginary number. so...
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Bob C
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| posted on 24/5/08 at 10:21 PM |
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bog wall when I was at uni
integral of 1/cabin with respect to cabin is
log cabin
looks better written properly.....
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james h
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| posted on 25/5/08 at 02:11 AM |
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quote:
Originally posted by Bob C
bog wall when I was at uni
integral of 1/cabin with respect to cabin is
log cabin
looks better written properly.....
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Tim 45
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| posted on 25/5/08 at 11:54 PM |
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dont forget that the log cabin is by the c
Alternative one is integral(poly'/poly) = Ln Poly
[Edited on 25/5/08 by Tim 45]
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Schrodinger
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| posted on 26/5/08 at 09:31 PM |
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quote:
Originally posted by t.j.
That calculation is not possible, that's the joke.....
No it is possible only the number is an imaginary number as Macbeast said
Keith
Aviemore
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eccsmk
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| posted on 26/5/08 at 09:38 PM |
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this is all well over my head so im going to sit quietly in the corner 
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Schrodinger
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| posted on 27/5/08 at 09:03 AM |
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See here
http://en.wikipedia.org/wiki/Imaginary_number
Keith
Aviemore
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Peteff
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| posted on 27/5/08 at 09:45 AM |
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Us quantum physicists don't see the point of the joke.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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iank
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| posted on 27/5/08 at 03:09 PM |
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Well i think it's funny.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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flak monkey
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| posted on 27/5/08 at 05:37 PM |
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LOL brilliant
Sera
http://www.motosera.com
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JoelP
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| posted on 28/5/08 at 08:05 PM |
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i just read it as inv rt -1 being unsolvable, knowing its an imaginary number would make it more amusing i suppose.
Where do you get taught about imaginary numbers? I did maths A-level and a little with my degree, but never came across the subject.
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flak monkey
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| posted on 28/5/08 at 08:25 PM |
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quote:
Originally posted by JoelP
i just read it as inv rt -1 being unsolvable, knowing its an imaginary number would make it more amusing i suppose.
Where do you get taught about imaginary numbers? I did maths A-level and a little with my degree, but never came across the subject.
Was in my a-level maths very briefly. But did a lot more in my first year engineering at uni, both in pure maths and mechanics. Have a feeling there
was some in my electronics course too...
Sera
http://www.motosera.com
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Macbeast
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| posted on 28/5/08 at 09:30 PM |
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It's very big in electronics once you start dealing with mixed resistance and capacitive or inductive reactance.
Z = x +jY ohms etc
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iank
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| posted on 28/5/08 at 10:01 PM |
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Did a fair bit on complex numbers and Laplace transforms in my A-level (but that was 25 ish years ago).
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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ravingfool
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| posted on 29/5/08 at 10:38 AM |
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you cover it more at A level if you do a double A level in maths. Then of course most types of engineering will have you messing around with them I
would have thought as noted above.
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Mr Whippy
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| posted on 29/5/08 at 11:38 AM |
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Imaginary numbers come up as a topic a lot in quantum physics, not that I know anything about them. Mores the pity I'd love to be able to see
that side of things, a bit jealous of folk who are good at math, never taught it properly at school right from day one
Fame is when your old car is plastered all over the internet
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iank
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| posted on 29/5/08 at 12:17 PM |
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I find them easiest to visualise as a simple graph. i.e. as another number line at 90 degrees to the real numbers. Then complex numbers are just a
point with an x, y coordinate. But it all gets a bit hairy quickly after that.
Though I got very confused when I didn't realise mathematicians tend to use i and engineers j to represent them.
This link seems good on them, but you need reasonable algebra to keep up.
http://www.clarku.edu/~djoyce/complex/
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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Mr Whippy
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| posted on 29/5/08 at 02:30 PM |
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interesting, kind of see where thats going
Fame is when your old car is plastered all over the internet
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Liam
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| posted on 29/5/08 at 06:47 PM |
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I think it's only us electricals that use j instead of i so we dont get confused with current.
It all got really horrible in ac circuit analysis using the polar form and then using euler's identity to express ac signals as exponentials etc
etc. Aaaaaaaaaggggggghhhhhhh major nightmares, and that was only first year stuff. Glad i've now defected to the light side and become a
mechanical!
Liam
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