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Apr
17
comment Find point at which equation stops having roots (if it exists)
That's the message indicating that there probably isn't a root. Also, I vote for b = 2.
Apr
11
awarded  Popular Question
Apr
8
comment Efficiently filling area with disks located at certain points
Using FindMaximum instead of NArgMax seems lots quicker and gives a similar result. Setting the starting radius to halfway to the closest point makes it even quicker.
Mar
13
comment How to calculate a gradient at x=0?
Why do you say it is too high?
Mar
13
answered Dropping n consecutive terms from a list periodically
Mar
5
accepted High memory use while exporting a BMP
Mar
5
awarded  Nice Question
Mar
4
revised High memory use while exporting a BMP
added 3270 characters in body
Mar
4
asked High memory use while exporting a BMP
Feb
7
awarded  Yearling
Jan
29
comment How can I make the output from Solve look nice?
That polynomial doesn't have nice roots, so I'm not sure what you are expecting. Perhaps Times @@ Roots[...] /. x == r_ -> x - r
Jan
29
comment How can I make the output from Solve look nice?
@GeorgeMills See the edit for what s2 looks like.
Jan
29
revised How can I make the output from Solve look nice?
added 888 characters in body
Jan
29
answered How can I make the output from Solve look nice?
Jan
28
comment A Sierpinski-ish structure, via 2D automata
I think removing the r___ in your fruit checking rule should do the trick. Once sorted, the same coordinates should be adjacent in the list. No need to check every possible pair.
Jan
28
revised How to use Graphics@Rotate@Show@Graphics without “Graphics is not a Graphics primitive or directive.”
Formatting
Jan
28
comment Finding unit tangent, normal, and binormal vectors for a given r(t)
I can't say I've heard the term 'reper' before. My googling suggests that it's not commonly used at all.
Jan
6
awarded  Nice Question
Dec
20
comment _?NumericQ equivalent for lists
How about just: p : {_?NumericQ ..}
Dec
19
comment Drawing a torus not bounding a solid torus
I can't say I'm particularly au fait with stereographic projections, so I'm not sure what you are expecting. But the surface of your knot goes through the origin, so dividing by the norm is going to make things fly off to infinity.