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Mar
30
reviewed Leave Open Is there a function $f:\mathbb{R}\to\mathbb{R}$ such that $f\circ f\circ f=Id.$, but $f\neq Id.$?
Mar
30
reviewed Close Proving the equations $x_1+\dots+x_n=0$, …, $x_1^n+\dots+x_n^n=0$ have a unique solution
Mar
30
reviewed Close Evaluate:$\int_0^{\pi/2}\frac{x \sin x \cos x}{(a^2 \cos^2 x+b^2 \sin^2 x)^2}dx$
Mar
29
reviewed Close Integral of $\big((1+\cos(x))\sin(x)\big)^2$
Mar
29
reviewed Close $\sin(\pi - a) = \sin (a)$. How/why?
Mar
29
comment $\sin(\pi - a) = \sin (a)$. How/why?
What's your definition of $\sin$? Is it in terms of triangles or complex exponentials?
Mar
29
reviewed Close how to find the argument of a multipication of complex numbers?
Mar
28
reviewed Leave Open If $dx$ is an infinitesimal, can't you list all real numbers as the sequence each whole number times dx?
Mar
28
reviewed Close Determining which number lies in sequence $1234567891011\ldots$ on the $10^{100005}$'th position
Mar
28
reviewed Leave Open Find the sum of series $\sum_{n=0}^{\infty}\frac{z^{kn}}{(kn)!}$
Mar
28
reviewed Close Solving parametric linear equation
Mar
27
reviewed Close A limit question regarding continuous $f(x)$
Mar
27
reviewed Close If $ f(x) + x^4[f(x)]^3 = 12$ and $f(2) = 2$, find $f′(2)$.
Mar
27
reviewed Leave Open No of right angled triangles
Mar
27
reviewed Close Geometric description of composition of two convex polygons?
Mar
26
reviewed Reviewed Visualizing Frobenius Theorem
Mar
26
reviewed Leave Closed g(x) = 1/(1+x^2) continuous everywhere (is this solution correct)
Mar
26
reviewed Close What is the algorithm to add binary numbers with boolean operations?
Mar
26
reviewed Close Group Theory Research Topics [advice]
Mar
26
reviewed Close top journals in analysis