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#math
<cyclicFifths> yes
<DemisM> p v !q == p -> q so !(p v !q) == !p ^ q
<Level15> hi, there
<jerware> it's just putting the and in english terms stumps me.
<exculpate> DemisM: what do you mean? "would yield the highest order number in say 345 would give me 3" isn't valid english
<cyclicFifths> jerware: it looks like DemisM is pretty good though :)
<DemisM> exculpate i need to be able to get the 3 from 346
<jerware> yea
<jerware> thanx guys
<cyclicFifths> i have to get away from the keyboard for a bit
<DemisM> or i need to get the first 4 in 4476
<cyclicFifths> :D
<DemisM> don't know how to right a problem for that
<exculpate> jerware: ever read gensler?
<jerware> no i have it. got a link exculpate ?
<jerware> im reading rosen
<jerware> a discrete math
<jerware> book
<exculpate> jerware: he has a nice book on different kinds of logic accompanied with a program called "logicola" that allows you to interactively work through problems
<verbose> what probability distribution would a random variable be that's the product of the numbers of two dice?
<jerware> does this program work on linux ?
<exculpate> http://www.routledge.com/textbooks/0415226759/book/main.shtml
<Level15> small question. say i have a set U of N elements (|U|=N). and i randomly take out a subset D of n elements (|D|=n) from it (n<N). Then i put them back on U and repeat the process. take out another D, put it back in, take out another (different) D, put it back in and so on, until i've done it M times. How many times is each element from U expected to have come out on any D?
<nvictor> % Limit[E^(x^3-x), x->1]
<mbot> nvictor: 1
<nvictor> cool
<nvictor> :)
<nvictor> I got it
<ed123> Hi. What's latec format to have one number over another, but without a line (ie not a fraction)
<|Steve|> genfrac should do it.
<|Steve|> What is it you're really trying to do though?
<ed123> its the combinatorics thing "a choose b"
<TRWBW3> isn't there an \over macro or something? actually i haven't used latex in maybe 18 years
<|Steve|> \over is tex.
<Galois> dude, use \binom{a}{b}
<TRWBW3> ah, that's why i remember wrong, i actually used tex more
<Galois> ALWAYS use the most specific command available for exactly what you are trying to do
<|Steve|> Exactly.
<Galois> in your case you're not trying to put one number over another
<Galois> you're trying to write a binomial coefficient
<Galois> use \binom
<ed123> Galois: I am just very new to it. thanks
<Galois> you will have to get used to thinking in specific terms, and you will have to get used to it real fast
<|Steve|> (I'm always lazy and mostly use the tex command for that {foo\choose bar}.)
<ed123> Binom doesnt seem to do what I want to do
<ed123> \binom{a}{b} puts the a outside parens
<Galois> http://www.combinatorics.net/weblib/commands/command.html
<ed123> figures, {a \choose b}
<Galois> you're doing it wrong
<|Steve|> http://www.mathbin.net/8335
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