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20241503
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17h
reviewed Reopen Is there an abelian group $G$ such that $|G| > 333$ and $x^3=e$ for all $x \in G$
17h
revised Mass centrum for $y=\sqrt{\ln (x+1)}$
deleted 207 characters in body
17h
revised Mass centrum for $y=\sqrt{\ln (x+1)}$
added 80 characters in body
18h
answered Mass centrum for $y=\sqrt{\ln (x+1)}$
18h
reviewed Leave Open $\lambda^{*}(A\cup B)=\lambda^{*}(A)+\lambda^{*}(B). $
18h
comment the sum of trigonometric functions and harmonic numbers
The default unit for $\arcsin$, $\arccos$ is the radian.
18h
reviewed Reject suggested edit on calculus tag wiki excerpt
18h
reviewed Looks OK Infinite topological space with cofinite topology is not Hausdorff
19h
comment Show: $ f(a) = a,\ f(b) = b \implies \int_a^b \left[ f(x) + f^{-1}(x) \right] \, \mathrm{d}x = b^2 - a^2 $
For why this is true, draw a picture.
19h
reviewed Leave Open Below this limit of integration should be how to solve?
19h
reviewed Leave Open A sum of 10,000 is invested for the months of July and August at 6% simple interest. Find the amount of interest earned:
19h
comment Below this limit of integration should be how to solve?
L'Hospital's Rule (twice) should be useful.
19h
reviewed No Action Needed When is a subring of a field an integrally closed domain?
19h
reviewed Leave Open When is a subring of a field an integrally closed domain?
19h
reviewed Leave Open How do I show the following through an infographic: Men are 543% more likely to participate than women.
21h
reviewed Leave Open Is there an abelian group $G$ such that $|G| > 333$ and $x^3=e$ for all $x \in G$
21h
reviewed Leave Open Prove that $a_n$ is a perfect square if $n$ is even without generating functions or Taylor series.
21h
answered If $A$ and $B$ are closed subsets of the set of real numbers, then is $A+B$ closed?
22h
reviewed Leave Open Are any two groups of order 23 isomorphic to each other?
22h
reviewed Leave Open Adding liquid to container that is never emptied: how much of the liquid is old?