#math - Mon 16 Apr 2007 between 00:00 and 00:05

NY Lost Funds



thermoplyaeexcelblue: http://jjaro.net/uploads/textual/calc3/ -- Here's all the lecture notes and homework from my Calc 3 class, plus a copy of Bachman's Differential Forms, which we were given a preprint copy of for free
excelbluecool
thermoplyaeWe didn't use a book, so there's nothing missing
excelblueah
this should be fairly easy for me to understand, right?
thermoplyaeAbsolutely
Plus the professor had really nice handwriting
whaleofconfusionah so John2 you want to find basis vectors for the row space of the matrix
Squall`Ugh, this is probably just me being stupid again, but I can't even think how I'm supposed to write |a(n+1) / a(n)| for the recursive sequence a(1) = 1 and a(n+1) = sin n / n * a(n). I don't think I could use an arbitrary value of n like | a(2) / a(1) | could I? That seems to be like the only way I could possibly do it, but it doesn't feel right.
TenyIf I factor 4t^2-28t+40 to 4(t^2-7t+10)
What would I do from there?
john2whaleofconfusion: I'm not really sure... The teacher never mentioned Vectors (He usually shows us examples of what to do, but he forgot his marker on that day, so he tried explaining what to do...)
SeveredHeadTeny--(t-5)(t-2)
neomagus00Squall`: You have an expression for a(n+1), why not just insert that into |a(n+1)/a(n)|
thermoplyaeSquall`: Maybe start by writing a closed form for the sequence
Squall`ok
whaleofconfusionSquall`: it's obvious
thermoplyaeOr maybe just divide
whaleofconfusionwhat is sin n / n * a(n) / a(n)?
thermoplyaeBecause it is pretty obvious
Tenyno no
what do I do with the 4?
do I put 2 in front of both brackets.
SeveredHeadTeny: Uh, nothing?
Tenyor leave 4 in front of (t-5)
Squall`oh
lol
SeveredHeadPutting 2 in front of both brackets is the same thing. ;)
Squall`god, wtf is wrong with me today
SeveredHeadRemember, multiplication is distributive.
TenyMe too Squal.
d: <
Squall`I feel so dumb :X
excelbluethermoplyae: hmm... those notes on the website? you scanned your notes?
SeveredHeadSo 2 * (t-5) * 2 * (t-2) = 4*(t-5)*(t-2)
:)
excelbluewonder where you get your nice paper?
thermoplyaeexcelblue: These are my professor's notes, and he owns a tablet PC that he totes everywhere
excelblueah
some excellent notes there hehe

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NY Lost Funds