#math - Sun 6 May 2007 between 00:10 and 00:24

NY Lost Funds



OlatheNope.
anubisssub question to that onw
OlatheI know Mathematica a bit, but not really TeX :)
anubissi have to find the equation for the curve that satisfies the initial condition: which is passing by the point (-3,4)
ailndxoh cool, didnt knew mathematica could do that
TRWBWanubiss: so you are solving for C. or -C, whatever.
anubissthe answer in the book is quite weird
let me try first
TRWBWanubiss: what was it? y=-1/(x^2-C)? then 4=-1/(9-C), 9-C=-1/4, C=37/4, y=-1/(x^2-37/4)
anubissoh
i tried to arrange the term and isolate C on one side first
Xerrozcan anyone recommend a online tutorial for Trigonometry?
anubissis that wrong ?
TRWBWanubiss: did you get the right answer?
anubissi do variables switch first then plug in numbers
i didnt get yet ;/
Olathexerroz: I think purplemath and sosmath have one.
anubissi have something weird
see:
x^2y + Cy = -1
then i block here
...isolating the C
i still got some algebra problems
TRWBWanubiss: C=-(1+x^2y)/y=-(1+9*4)/4=-37/4
anubiss: Cy=-1 - x^2y=-(1+x^y), divide by y, C=-(1+x^2y)/y=-(1+9*4)/4=-37/4
anubissthats nice to write it all, i can work it on my own, and see my mistaks
TRWBWanubiss: i'm kinda tired, i'm sorta in just give the answer mode
anubissbut im serious
TRWBWanubiss: k, hope that helped. gl
anubissthanks !
KizakHello Everyone
OlatheHi.
Kizaksomewhere here smart with math I hope? :P
ailndxwhats the size of the empty set, 0 or 1?
OlatheNope. We're all here to get help, too.
ailndx: Zero.
ailndxok, can a subset be same as the original set?
anubissKizak: sorry i was the last one to receive help, 1 minute ago
TRWBWailndx: the original set is a subset of the original set
Olatheailndx: Yep, if you don't mean proper subset.

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NY Lost Funds