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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