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visits member for 1 year, 8 months
seen Dec 16 at 12:18

Nov
30
accepted Factorize matrix determinant
Nov
30
asked Factorize matrix determinant
Nov
29
asked Product of Fourier transform
Nov
21
accepted Sign problem, Laplace transform of sin(at)
Nov
21
asked Sign problem, Laplace transform of sin(at)
Oct
30
awarded  Teacher
Oct
30
answered Standard deviation…
Oct
30
comment Standard deviation…
Well that's weird... "x = [-1,0,1]; stdev(x)" yields 1 on Scilab, standard deviation fonction on my phone also says 1, and Wolfram|Alpha too : wolframalpha.com/input/?i=standard+deviation+{-1%2C0%2C1}
Oct
30
asked Standard deviation…
Oct
26
awarded  Curious
Oct
25
accepted Is this rigorous notation?
Oct
25
asked Is this rigorous notation?
Oct
24
awarded  Commentator
Oct
24
comment Fourier series of x
Ok I get it, thanks.
Oct
24
comment Fourier series of x
I'm not sure I understand. The teacher said the integration boundaries don't matter as long as it's over the same period... shouldn't the result be the same for $[-\pi,\pi]$ and $[0,2\pi]$ ?
Oct
24
asked Fourier series of x
Oct
10
accepted Differential elements notation
Oct
10
comment Differential elements notation
Also, any order differentials have the same meaning of "a small element of something" right ? So I can choose the one that suits me to describe my problem using their respective properties ?
Oct
10
comment Differential elements notation
So if I consider a volume element, in cartesian coordinates for example, The correct notation is $d^3V = dxdydz$ and not $dV = dxdydz$ as we can see everywhere ?
Oct
10
asked Differential elements notation