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Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0last two questions...cant understand

phi
 one year ago
Best ResponseYou've already chosen the best response.1Didn't you already do this ? you have a sin t that you want to rotate faster to make it rotate twice as fast, use sin(2t) (and cos(2t) ) and keep everything else the same.

Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0ya but last 2

phi
 one year ago
Best ResponseYou've already chosen the best response.1as I remember, in the first part, the hoop has a diameter of 2, and a radius of 1 for the next part, I think you want a hoop with 1/2 the diameter, so its mark hits the floor twice as often. that means its radius will be 1/2 and its diameter 1

Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0ok so whats the answer for d?

phi
 one year ago
Best ResponseYou've already chosen the best response.1r=(t 0.5*sin(2t) ) i + (0.5  0.5 cos(2 t)) j

Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0is that d???

Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0ya i gatcyu...so how should i graph that ???

phi
 one year ago
Best ResponseYou've already chosen the best response.1I don't know what graphing tools you have.

Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0wolframalpha

Best_Mathematician
 one year ago
Best ResponseYou've already chosen the best response.0i know upto here but how to plot themm

phi
 one year ago
Best ResponseYou've already chosen the best response.1see http://www.wolframalpha.com/input/?i=parametric+plot+r%3D+%5B+%28t+0.5*sin%282t%29+%29++%2C+%280.5++0.5+cos%282+t%29%29+%5D+and++r%3D+%5B+t++sin%28t%29%2C+1cos%28t%29%5D+for+t%3D0+to+6pi for the plot of the position vectors for the two hoops
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