10,050 reputation
32154
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location UK
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visits member for 3 years, 3 months
seen 8 mins ago

I'd rather walk than take a taxi.


7m
revised homomorphism between diedral group $D_3$ triangle isometries and $S_3$ identification problem
added 60 characters in body; edited title
11m
reviewed Looks OK Where is the symmetry?
11m
reviewed Edit Solving formula with cosine
11m
revised Solving formula with cosine
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13m
comment Let $f(t)\in \mathcal C'[-1,1]$. Evaluate $\lim_{n\to \infty}\frac 1 n \sum_{k=1}^nf'\left(\frac k {3n}\right)$.
What have you tried? If you tell us this then we will be better able to help you. And it helps us feel that we are not just doing your homework for you.
14m
reviewed Close Let $f(t)\in \mathcal C'[-1,1]$. Evaluate $\lim_{n\to \infty}\frac 1 n \sum_{k=1}^nf'\left(\frac k {3n}\right)$.
14m
reviewed Close Solving formula with cosine
14m
comment Solving formula with cosine
What have you tried? If you tell us this then we will be better able to help you. And it helps us feel that we are not just doing your homework for you.
19m
answered homomorphism between diedral group $D_3$ triangle isometries and $S_3$ identification problem
41m
reviewed Looks OK Solving system of equations with complex numbers
42m
reviewed Close Convolution Theorem to solve integral involving bessel functions
43m
comment Convolution Theorem to solve integral involving bessel functions
You should type out your question using mathjax. Your screenshot is hurting my eyes (seriously - I can't look at it!) Also, it would be useful if you could provide some context to your problem (did you find it in a book, or is it a question from a course your doing?), and perhaps tell us a little of what you've tried.
45m
reviewed Close Minimization using Davies, Swann and Campey algorithm
45m
comment Minimization using Davies, Swann and Campey algorithm
Your question is a bit too broad. I mean, either look it up in a book, or pose a specific problem...
1h
reviewed Reviewed Optimization with probabilities
1h
revised Advantages of IMO students in Mathematical Research
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1h
reviewed Edit If $f(t)\in \mathcal{C}[-1,1]$ then evaluate $\lim_{h\to\infty} \frac{1}{h}\int_{-h}^hf(t)dt$.
1h
revised If $f(t)\in \mathcal{C}[-1,1]$ then evaluate $\lim_{h\to\infty} \frac{1}{h}\int_{-h}^hf(t)dt$.
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1h
comment What is a geometric shape?
It is not entirely relevant, and yet it may be precisely what you are after: have you ever read the introduction to Yaglom's Geometric Transformations? It is basically a short essay on "What is Geometry?". The moral is, basically, that formalizing our intuitive notion of "shape" is actually more complicated than one might imagine.
1h
comment Simplifying/solving a logarithm $\log_24^{2n}$
@Jean-ClaudeArbaut Well, yes, but then the question would remain unanswered.