252 reputation
17
bio website lvella.wordpress.com
location Brazil
age 27
visits member for 3 years, 7 months
seen 2 days ago

Computer Science master degree student.


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
Apr
12
accepted Center of circle on a stereographic projection
Apr
12
comment Center of circle on a stereographic projection
Cool. Thanks. I thought the same thing just some time after posting. Since then I've been struggling to find the two intersection points between the circle and a meridian passing through the center. I only have the center in euclidean coordinates, and have little idea on how to work with spherical coordinates (I am much more a programmer than a mathematician). As soon as I am able to code it, I'll accept the answer.