16,142 reputation
13988
bio website linkedin.com/in/crntaylor
location London, United Kingdom
age 31
visits member for 4 years, 1 month
seen Jan 15 at 20:40

I'm broadly interested in very applied math. I try to apply ideas from mathematics, statistics, machine learning, formal systems and computer science to solve real-world problems. Mostly in applied finance/quantitative trading, but in other areas if the mood takes me.


The following is for my own use, but feel free to borrow it -

Hi. It looks like you are new here. We are generally very willing to help, but we like users to show the work that they've done towards solving the problem on their own first. If you can edit your question to show the code you've written so far, and where you are stuck, then you will get a much better response.


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revised Computational complexity of least square regression operation
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comment Integrate by parts: $ \int x\,\tan^2(2x) dx $
What are $t$ and $g$? Is it one function $tg$? Or are they constants?
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revised Choice Problem: choose 5 days in a month, consecutive days are forbidden
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comment Choice Problem: choose 5 days in a month, consecutive days are forbidden
Thanks, edited :)
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answered Choice Problem: choose 5 days in a month, consecutive days are forbidden
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revised How do you integrate imaginary numbers?
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comment Consider the problem minimize $f(x)= x^4 −1. $
The proof of quadratic convergence for Newton's method uses the fact that the first derivative of the function whose zero you are finding (i.e. $f''(x)$ in your case) does not vanish on some interval surrounding the root. But you have $f''(x) = 12x^2$ which is zero at the root $x=0$, so the proof of quadratic convergence fails.