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Guest Message by DevFuse
 

bonanova

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Posts I've Made

In Topic: Taking q to the limit

15 December 2014 - 02:07 PM

k-man (post #2) finds the region between local extrema and states (post 7) that in that region there is no real solution.
dejMar (post #6) finds the region where the discriminant is negative.
Both approaches give the right answer.

Post #6 is what I was looking for.
But before I mark it, I'll ask for comments regarding whether post #2 an equivalent condition for real solutions.

In Topic: Number of discrete "curves" in two dimensions

15 December 2014 - 01:27 PM

Spoiler for

In Topic: Taking q to the limit

11 December 2014 - 06:39 AM

Find the real numbers a and b for which,

when (and only when) a < q < b,

x3 + 1/x3 = q does not hold for any real value of x (has no real solutions in x.)


In Topic: Taking q to the limit

10 December 2014 - 11:24 PM

Do the extrema relate to the OP conditions?


In Topic: Pawn Alice

10 December 2014 - 11:16 PM

Kudos to k-man.

 

Permitting (real) Queen moves only, this seems optimal.

 

Spoiler for