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Sep
9
revised Proving $\arg(zw)=\arg(z)+\arg(w)$
[Edit removed during grace period]
Sep
9
answered Proving $\arg(zw)=\arg(z)+\arg(w)$
Sep
9
comment Find the generating function of the sequence $a_n = \sum\limits_{k=0}^n k(k-1)$
For reference, the answer is $$\frac{2 x^2}{(x-1)^4}.$$
Sep
8
answered Inequalities with logarithms and limits
Sep
8
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
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Sep
8
accepted Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
Sep
8
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
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Sep
7
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
added 110 characters in body
Sep
7
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
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Sep
7
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
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Sep
7
comment Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
@ Claude thank you for that tip - so it does! - I'll take a look at this.
Sep
7
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
added 16 characters in body
Sep
7
revised Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
edited title
Sep
7
asked Is anything known about $2\pi$ integer multiple arguments of the cosine integral?
Sep
3
revised Can I conjugate a complex number : $\sqrt{a+ib}$?
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Sep
3
revised Can I conjugate a complex number : $\sqrt{a+ib}$?
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Sep
3
answered Can I conjugate a complex number : $\sqrt{a+ib}$?
Sep
2
revised $f( \alpha x + \beta y) =\alpha f(x) + \beta f(y)$
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Sep
2
answered $f( \alpha x + \beta y) =\alpha f(x) + \beta f(y)$
Sep
1
comment Is there an equation to find the angle of the diagonal in a rectangle?
Drawing a picture might help clarify your thoughts.