paul marcus
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# 24 Actions

 Feb10 revised Differential equation variation of parametres deleted 177 characters in body Feb10 comment marriage probability problem What did you get? I want to see how different our answers are. Thanks Feb10 comment marriage probability problem hmm, but I don't have the exact number for seats. I'm inserting B first and then inserting D into holes between 2n-2 and 2n-1 people. Well.. then what did you get? Feb10 comment marriage probability problem If A and B already sit next to each other, then treat A and B as an entity. Insert D into 2n -1 places, the probability that D is next to C is 2 / 2n-1... What did you get? Feb10 comment marriage probability problem sorry, is it 2/ (2n-1)*n ? I used conditional probability Feb10 comment marriage probability problem I got 1/n and 2/ 2n-1. is that correct? Feb10 asked marriage probability problem Feb10 comment expectation and variance problem hey, is E[x1] = 1/n and E[x1 x2] = 2/ 2n-1? Feb10 comment expectation and variance problem How can I calculate P[x1 x2] and P[x1]? Feb10 asked Expectation probability question Feb9 comment Differential equation variation of parametres also, if I find two special solutions to the homogeneous solution, how can I get general solution to homogeneous one? Can I simply add c1, c2? Feb9 comment Differential equation variation of parametres well, then n = -2 or n = -4, why is n = 2 also a solution? Feb9 comment Differential equation variation of parametres That's the problem... I don't know what value of n to try Feb9 comment Differential equation variation of parametres how can I find n? Feb9 revised Differential equation variation of parametres added 2 characters in body Feb9 comment Differential equation variation of parametres Yes, I missed that, edited Feb9 asked Differential equation variation of parametres Feb9 asked expectation and variance problem Feb3 asked hard parametrization problem Jan18 awarded Disciplined