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May 24, 2011 at 1:24 comment added Turbo Complex inputs is fine.
May 24, 2011 at 0:52 history edited Aaron Meyerowitz CC BY-SA 3.0
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May 23, 2011 at 23:14 comment added Aaron Meyerowitz OK, I expanded the answer a bit.
May 23, 2011 at 23:14 history edited Aaron Meyerowitz CC BY-SA 3.0
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May 23, 2011 at 18:37 comment added Turbo For $2n=4$, from your technique, I am getting more than I want. That is I am getting coefficient $a$ in addition to $c$. The question is whether one can get information about $c$ at the cost of all other coefficients. May be there is a way to get $c$ without knowing $a$. In that case, may be lesser computations suffice. For$2n=4$, I dont think less than $2$ evaluations suffice but there could be another way that generalizes to general $n$ so that when that technique is applied to $2n=4$ case, it may not give anything about $a$ while giving information about $c$.
May 23, 2011 at 18:26 history answered Aaron Meyerowitz CC BY-SA 3.0