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

### NY Lost Funds

 Olathe Nope. anubiss sub question to that onw Olathe I know Mathematica a bit, but not really TeX :) anubiss i have to find the equation for the curve that satisfies the initial condition: which is passing by the point (-3,4) ailndx oh cool, didnt knew mathematica could do that TRWBW anubiss: so you are solving for C. or -C, whatever. anubiss the answer in the book is quite weirdlet me try first TRWBW anubiss: 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) anubiss ohi tried to arrange the term and isolate C on one side first Xerroz can anyone recommend a online tutorial for Trigonometry? anubiss is that wrong ? TRWBW anubiss: did you get the right answer? anubiss i do variables switch first then plug in numbersi didnt get yet ;/ Olathe xerroz: I think purplemath and sosmath have one. anubiss i have something weirdsee:x^2y + Cy = -1then i block here...isolating the Ci still got some algebra problems TRWBW anubiss: C=-(1+x^2y)/y=-(1+9*4)/4=-37/4anubiss: Cy=-1 - x^2y=-(1+x^y), divide by y, C=-(1+x^2y)/y=-(1+9*4)/4=-37/4 anubiss thats nice to write it all, i can work it on my own, and see my mistaks TRWBW anubiss: i'm kinda tired, i'm sorta in just give the answer mode anubiss but im serious TRWBW anubiss: k, hope that helped. gl anubiss thanks ! Kizak Hello Everyone Olathe Hi. Kizak somewhere here smart with math I hope? :P ailndx whats the size of the empty set, 0 or 1? Olathe Nope. We're all here to get help, too.ailndx: Zero. ailndx ok, can a subset be same as the original set? anubiss Kizak: sorry i was the last one to receive help, 1 minute ago TRWBW ailndx: the original set is a subset of the original set Olathe ailndx: Yep, if you don't mean proper subset.