Math Is Fun Forum
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#901 Re: Help Me ! » Basic limit proof » 2007-07-09 04:30:40
Hence, as
is squeezed in,Is that right?
#902 Re: Help Me ! » Basic limit proof » 2007-07-09 00:11:17
Actually I just figured out how to prove, I used
, divided through by tan, then took the limit of cos.But I would be happy if you could tell me what the L'Hopital is? 
#903 Help Me ! » Basic limit proof » 2007-07-08 23:38:32
- Identity
- Replies: 8
Show that
It said as a hint to use the same proof but for sine to help, but I'm not really sure how to do that...
#904 Re: Puzzles and Games » Primes » 2007-07-07 16:24:48
Hmmm could you use Euclid's Algorism to find all the factors quickly?
#905 Re: Help Me ! » x^2 < 2 » 2007-07-07 04:35:51
Thanks... so the sign is flipped for the negative root so that x remains within the boundaries
#906 Help Me ! » x^2 < 2 » 2007-07-07 04:20:00
- Identity
- Replies: 4
If I have to solve x^2 < 2, I get
or What now?#907 Re: Help Me ! » Decimal expansion of x/11 » 2007-07-07 03:58:00
Thanks Jane!
#908 Help Me ! » Decimal expansion of x/11 » 2007-07-07 01:52:35
- Identity
- Replies: 2
I'm trying to find the decimal expansion for
So far I've got this pattern:
1/11 = 0.0909090909...
2/11 = 0.1818181818...
3/11 = 0.2727272727...
#909 Re: Dark Discussions at Cafe Infinity » Harry Potter, Voldermort and the other that survives. » 2007-07-06 16:46:12
You didn't look did u? 
:
#910 Re: Puzzles and Games » Primes » 2007-07-06 16:44:47
how is it possible to compute primes without computers?
#911 Re: Guestbook » Herman says » 2007-07-06 16:39:29
Huh? Why do you think nobody's replied Tigeree?
Oh, and thanks herman, I'm sure everyone here especially Mathsisfun will like that
#912 Re: Dark Discussions at Cafe Infinity » Harry Potter, Voldermort and the other that survives. » 2007-07-05 02:44:25
#913 Re: Dark Discussions at Cafe Infinity » Harry Potter, Voldermort and the other that survives. » 2007-07-04 16:13:58
Choco wrote:I've got another splendid ending!
Voldermort comes back from the dead again and kills every single person in Hogwarts.
What's the point of the story if everyone dies?
It will highlight the risks associated with running an unlawful business, whether it is a non-profit organisation or not.
#914 Re: Puzzles and Games » What famous mathematician are you? » 2007-07-03 10:15:09
Srinivasa Ramanujan
Hell yeah!!!!!
#915 Re: Puzzles and Games » lightning's spelling Bee » 2007-07-02 01:23:47
Organal?
more on the lines of organelle, but quite close!
#916 Re: Maths Is Fun - Suggestions and Comments » Lag? » 2007-07-02 01:19:01
nah... i don't remember changing any settings. Seems that it's working ok now though. Was a bit weird
#917 Re: Maths Is Fun - Suggestions and Comments » Lag? » 2007-07-01 08:35:28
Hmm... it seems ok at the moment, perhaps it was just my computer's fault 
#918 Maths Is Fun - Suggestions and Comments » Lag? » 2007-07-01 07:08:35
- Identity
- Replies: 7
I've recently noticed some lag in the forums. It's not related to internet speeds, but rather page updating.
One time I was browsing and saw new posts, but when I clicked 'Show new posts since last visit', it had not yet been updated (and this is about 1 hour after the new posts).
Another time, in fact just now, the blue square showed next to the 'Help me' forum, and when I clicked 'Show new posts' it had the link to the new post (by nelson12), but when I clicked directly on 'Help me' from the main forum page, there were no new posts!
EDIT: This post did not even show up when I posted it! I had to go to my profile and click 'show all posts' to even redirect myself back here!
#919 Help Me ! » Divisibility » 2007-06-30 22:43:31
- Identity
- Replies: 1
I was reading this number theory book and there was part where it gave
and it said "Since ac is divisible by b according to our assumption, this relation shows that
is divisible by b.But how???
#920 Re: Dark Discussions at Cafe Infinity » Global Warming scenarios » 2007-06-30 22:07:31
Could it be the case that global warming is just an invention by the science authorities in order to get more funding?
#921 Re: Maths Is Fun - Suggestions and Comments » Reaction Math with High Scores » 2007-06-30 21:51:34
Hey Mathsisfun can you please add some more variations to this? It's so much fun! I'd like to propose a mixed +-÷× game, and also some variations for large numbers (u know cuz then its more about maths than reactions). That would be awesome!
Also for some reason it hasn't added my scores 
#922 Re: Jai Ganesh's Puzzles » 10 second questions » 2007-06-30 18:38:37
Can someone please answer 173-174?
#923 Re: Puzzles and Games » Primes » 2007-06-30 07:42:57
#924 Re: Dark Discussions at Cafe Infinity » Global Warming scenarios » 2007-06-30 06:14:59
our race survived an ice age before, and that was before we could even really talk properly, i think we can do just fine.
but in our age the threat comes not from nature, but from ourselves
#925 Re: Help Me ! » PlusMinus » 2007-06-30 02:26:30
Ok, I just thought that ±x + ±x = 0 implied that either
x + x = 0 or -x -x = 0