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Xyzzy 2009-08-30 18:52

50 replies
 
This is just (another) silly idea to see how long it takes to get 50 unique members to post to a thread.

The rules:[LIST=1][*]Post an interesting math snippet, using the forum's math rendering engine.[*]Watch the thread.[*]Profit![/LIST]You may only post once in this thread. If you post a second time it will be deleted.

[tex]\red\fs2 1\:+\:1\:=\:2[/tex]

frmky 2009-08-30 19:40

[TEX]e^{i\pi}=-1[/TEX]

Batalov 2009-08-30 19:59

[tex]B_m=\sum_{k=0}^m\sum_{v=0}^k(-1)^v {k \choose v} \frac{v^m}{k+1}[/tex]

Note: \binom doesn't work in your renderer!

10metreh 2009-08-30 20:04

IMO, this thread should be deleted.

WraithX 2009-08-30 20:17

One of my favorites, 5 mathematical constants in one equation:

[tex]\blue\fs5 e^{(\pi*i)}\:+\:1\:=\:0[/tex]

And since that one is already taken, I've seen funny t-shirts like:

[tex]\green\fs5 \int_{10}^{13} 2x\,dx[/tex]

[tex]\red\fs5 \int \frac{1}{cabin}\,dcabin = \log cabin[/tex]


Or, here's a dangerous one:

[tex]\blue\fs5 2^{\aleph_0} = \aleph_1[/tex]

Brian-E 2009-08-30 20:17

[tex]\left|\pi-\frac{355}{113}\right|<10^{-6}
[/tex]

bsquared 2009-08-30 20:27

[quote=10metreh;188075]IMO, this thread should be deleted.[/quote]

Because there's no place for silliness in this world? Excellent point there. Allow me to not invite you out for drinks anytime soon

[tex]y(x) = (ax +b)^2 - n[/tex]

retina 2009-08-31 01:38

[QUOTE=Xyzzy;188060]Post an interesting math snippet, using the forum's math rendering engine.[/QUOTE]Note to others: This only works if you allow JS. I don't got any of that JS stuff so ...

a=b
a^2=ab
a^2-b^2=ab-b^2
(a+b)(a-b)=b(a-b)
a+b=b
2b=b
2=1

mdettweiler 2009-08-31 02:06

[quote=retina;188118]Note to others: This only works if you allow JS. I don't got any of that JS stuff so ...

a=b
a^2=ab
a^2-b^2=ab-b^2
(a+b)(a-b)=b(a-b)
a+b=b
2b=b
2=1[/quote]
Actually, you can still use the rendering engine; just enclose the text to be rendered in [noparse][tex][/noparse] tags. That's all the little JS button does anyway. :smile: Heck, I rarely use the buttons anyway even though I have JS enabled.

As an example, here's your little snippet rendered with the rendering engine, without the help of any JS buttons. :wink:

[tex]a=b[/tex]
[tex]a^2=ab[/tex]
[tex]a^2-b^2=ab-b^2[/tex]
[tex](a+b)(a-b)=b(a-b)[/tex]
[tex]a+b=b[/tex]
[tex]2b=b[/tex]
[tex]2b=b[/tex]
[tex]2=1[/tex]

One thing to note is that it seems you need to enclose each individual line of a multi-line selection, or else everything gets run together as one line.

Uncwilly 2009-08-31 03:17

[tex]\pi\neq4[/tex]

davieddy 2009-08-31 03:40

[quote=bsquared;188081]Because there's no place for silliness in this world? Excellent point there. Allow me to not invite you out for drinks anytime soon

[/quote]

I endorse this sentiment. It gives me a reason to be cheerful
for living at the end of Buckinghamshire opposite to the Chilterns.

It only just occurred to me that the largest signed 32bit integer
is a famous Mersenne prime.

[tex]Cheers![/tex]


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