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awarded  Announcer
May
15
accepted Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold?
May
15
comment Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold?
@KittyL Yes, that seems to be the correct answer as the title of the section is "amplitude spectrum" (and I have never seen a negative amplitude). I am not sure what I should do now with this question. Delete it? Do you want to post your comment as an answer?
May
15
reviewed Approve Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold?
May
15
asked Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold?
Apr
29
comment Is self study of proof-based mathematics difficult?
+1 for "All mathematics is "proof based""
Apr
29
comment Is self study of proof-based mathematics difficult?
Which branch of mathematics is not proof-based?
Apr
29
awarded  Popular Question
Apr
26
awarded  Notable Question
Apr
5
awarded  Good Question
Apr
2
comment How can I get the maximum score without iterating all possibilities?
You wrote a lot about the scoring function (which is not computationally intensive), but the question is about how make sure that I don't have $\mathcal{O}(2^{n-1})$ calculations of the scoring function.
Apr
1
revised How can I get the maximum score without iterating all possibilities?
added 15 characters in body
Apr
1
revised How can I get the maximum score without iterating all possibilities?
added 511 characters in body
Apr
1
asked How can I get the maximum score without iterating all possibilities?
Mar
31
comment Does typesetting of mathematical content differ in right-to-left languages?
The reason why Wikipedia uses the western style math might simply be due to technical difficulties. Getting nice math rendered in another way might not be that easy.
Mar
31
comment Does typesetting of mathematical content differ in right-to-left languages?
Taking a first glance at ar.wikipedia.org/wiki/… it seems as if math would be used the same way everywhere. From left to right, top to bottom. However, at the bottom there is a mirrored root symbol.
Mar
31
revised Does typesetting of mathematical content differ in right-to-left languages?
added 89 characters in body
Mar
31
asked Does typesetting of mathematical content differ in right-to-left languages?
Mar
17
revised How to prove intersections and subsets of sets
added 8 characters in body
Mar
4
comment If I hear thunder 5 seconds after I see the lighting, can I calculate the distance to where lighting occurred?
This question probably rather belongs to physics.stackexchange.com