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 Curious
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  • 0 posts edited
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  • 16 votes cast
Aug
20
asked Are there any “proof schemes” for P $\neq$ NP?
Aug
20
comment How to prove that $P \neq NP$
Can you elaborate on "etc! many others!"? I was going to ask the same thing myself, but I found this had already been asked (and answered).
Jul
3
accepted Help finding the closed formula for a recurrent relation
Jul
3
revised Help finding the closed formula for a recurrent relation
deleted 4 characters in body
Jul
2
comment Help finding the closed formula for a recurrent relation
Some instrument? Something like limit? If so, I don't even know how to write it down...
Jul
2
asked Help finding the closed formula for a recurrent relation
Jul
2
awarded  Curious
Mar
29
comment Why $\cos^3 x - 2 \cos (x) \sin^2(x) = {1\over4}(\cos(x) + 3\cos(3x))$?
It is for an assignment, but that is not the goal, I can leave the answer in the form I found it. I was just checking if I got the correct answer with Wolfram Alpha and I got this completely different answer, that I was unable to turn one into the other.
Mar
29
awarded  Commentator
Mar
29
accepted Why $\cos^3 x - 2 \cos (x) \sin^2(x) = {1\over4}(\cos(x) + 3\cos(3x))$?
Mar
27
asked Why $\cos^3 x - 2 \cos (x) \sin^2(x) = {1\over4}(\cos(x) + 3\cos(3x))$?
Mar
26
asked Derivatives of conditionally defined functions
Mar
13
comment What is a finite dimension subspace contained on an infinite dimension Hilbert space?
That thought had not occurred to me, mainly because the very notion of making a linear combination of a non-enumerable infinite set of functions is alien to me... it makes much more sense to me just to define the function itself.
Mar
12
asked What is a finite dimension subspace contained on an infinite dimension Hilbert space?
Sep
20
revised Soft question: Unconventional proofs
added 8 characters in body
Sep
20
answered Soft question: Unconventional proofs
Aug
19
revised Help finding solution for trigonometric equation
added 5 characters in body
May
21
accepted Help finding solution for trigonometric equation
Oct
25
accepted Basic expression mangling question
Oct
25
asked Basic expression mangling question