moose
Reputation
2,642
Next privilege 3,000 Rep.
 18h awarded Announcer May15 accepted Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold? May15 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? May15 reviewed Approve Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold? May15 asked Why does $a\cdot \cos(kx)+b\cdot\sin(kx)=\sqrt{a^2+b^2}\sin(kx+\phi)$ hold? Apr29 comment Is self study of proof-based mathematics difficult? +1 for "All mathematics is "proof based"" Apr29 comment Is self study of proof-based mathematics difficult? Which branch of mathematics is not proof-based? Apr29 awarded Popular Question Apr26 awarded Notable Question Apr5 awarded Good Question Apr2 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. Apr1 revised How can I get the maximum score without iterating all possibilities? added 15 characters in body Apr1 revised How can I get the maximum score without iterating all possibilities? added 511 characters in body Apr1 asked How can I get the maximum score without iterating all possibilities? Mar31 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. Mar31 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. Mar31 revised Does typesetting of mathematical content differ in right-to-left languages? added 89 characters in body Mar31 asked Does typesetting of mathematical content differ in right-to-left languages? Mar17 revised How to prove intersections and subsets of sets added 8 characters in body Mar4 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