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If I have matrics as follows: > a <- c(1,1,0,0) > b <- c(4,4,0,0) > c <- c(3,5,5,6) How can I use R code to solve the equation ax^2+bx+c=0. thanks! yuying shi [[alternative HTML version deleted]]

...) TAOCP-2002 (Knuth)] . Is there any other method besides that? 3. How to generate 100 random standard normal deviates using the Box-Muller method for standard normal random deviates and sort the sequence, smallest to largest? Your kind help is greatly appreciated. Thanks in advance! best wishes yuying shi [[alternative HTML version deleted]]

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 18.03.2013 13:35, JonY wrote: > Before anyone does anything, see __wgetmainargs > <http://msdn.microsoft.com/en-us/library/ff770599.aspx>. > > It can expand wildcards. Since it already provides argc/argv/env, > it is more a less a drop-in replacement for the main() arguments. I can't find its version info. MSDN only

Dear all, I am doing an ordinal data simulation. I?have a question regarding the cut off values between categories. Suppose I have three categories, if I do regression, there should be two cut off values. I find some simulation code for the ordinal data. However, they usually only generate a uniform random number and compare the probability with the random number. Could any one be so kind to

On 3/18/2013 14:55, Erik de Castro Lopo wrote: > Brian Willoughby wrote: > >> I believe that shell does handle wildcards on all Unix variants, >> including OSX. > > Yes. > >> Since Windows does not handle them, I suggest that the >> main flac code not be littered with code that's not necessary on the >> primary platforms. > > No, the