Michael Joyce
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 Oct 17 answered formula for the angle between a line and a plane in $R^4$ Oct 16 comment Determine 4th vertice of tetrahedron FYI, there is no such as a 'vertice'. The singular of 'vertices' is 'vertex'. Oct 15 awarded Yearling Oct 14 awarded Custodian Oct 14 reviewed Edit Determine suitable quadraples of positive integers satisying the following conditions Oct 14 revised Determine suitable quadraples of positive integers satisying the following conditions added one tag Oct 14 reviewed No Action Needed Find the range of $f(x)=x/(3x^2−3x)$ Oct 14 reviewed Close Seconds of a Clock Oct 14 reviewed Leave Open Abstract algebra book recommendations for beginners. Oct 14 reviewed Leave Open What is $(-1)^{3/2}$? Oct 14 reviewed Leave Open Find a set of values for x for a decreasing function Oct 14 reviewed Close A question about unit vectors Oct 14 reviewed Leave Open Let $V:= (C([0,1]),\|\cdot\|$) with $\|f\|:= \int_0^1|f(x)| \ dx$. Consider the function $f_n$ and show that V is not a Banach Space. Oct 14 reviewed Close Uniform Convergence using Abel's test for a series based on convergence of a series Oct 14 reviewed Leave Open Evaluating the integral $\displaystyle \int_{0}^{\pi/2} (\cos^{5}x)\sin (7x)dx$? Oct 14 reviewed Leave Open Prove that for all $n\in\mathbb{N}$, $\sqrt{n(n+1)}$ is not an integer. Oct 14 reviewed Close Laws of logic Assertion/Reason format Oct 14 reviewed Close Inverse Laplace Transfrom of $s^{-1}e^{-a\sqrt{s} + b/s}$ Oct 14 reviewed Looks OK Solve that $\displaystyle\lim_{n\to\infty}\frac{\sum_{k=1}^n\sin\sqrt k}{n}=?$ Oct 13 revised Is $\mathbb{R}^*\oplus \mathbb{R}^* \simeq \mathbb{C}^*$? added 110 characters in body