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 Yearling
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  • 0 posts edited
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  • 29 votes cast
Aug
24
awarded  Yearling
Jun
9
revised Fourier transform of $f'(t)$
deleted 6 characters in body
Jun
9
accepted Fourier transform of $f'(t)$
Jun
9
asked Fourier transform of $f'(t)$
Jun
8
revised Limit of sinc and dirac delta
added 309 characters in body
Jun
7
comment Limit of sinc and dirac delta
Intuitively, by looking at the picture I can see that it's true, but I don't understand how to evaluate the limit for $\omega \neq 0$
Jun
7
asked Limit of sinc and dirac delta
Jun
7
accepted Fourier transform of the Fourier transform
Jun
6
comment Fourier transform of the Fourier transform
Ok. I still don't understand how $e^{-it(\tau+\omega)}dt = e^{-itu}du$ though... if $u = (t+\omega)$ then $e^{-itu}du = e^{-it^2-it\omega}dt$ ?
Jun
6
comment Fourier transform of the Fourier transform
So, where does the formula with $2\pi$ come from ?
Jun
6
comment Fourier transform of the Fourier transform
You mean it depends on the definition of the Fourier transform ? Which one is correct if I use the following definition : $\hat{f(\omega)} = \int_{-\infty}^{\infty}f(t)e^{-i\omega t}dt$
Jun
6
asked Fourier transform of the Fourier transform
May
28
revised Derivation of divergence in spherical coordinates from the divergence theorem
edited title
May
28
comment Derivation of divergence in spherical coordinates from the divergence theorem
Actually I don't even know what a differential 2-form or an exterior derivative are. I'm a physics undergraduate student and our math teachings are... not very advanced. But this is supposed to be doable with my limited math knowledge.
May
28
asked Derivation of divergence in spherical coordinates from the divergence theorem
May
27
comment Intrinsic definition of divergence and curl
This is beyond my current math knowledge (I'm a physics undergraduate student) but thanks anyway.
May
26
comment Intrinsic definition of divergence and curl
No, I have not.
May
26
asked Intrinsic definition of divergence and curl
May
26
accepted Parametrization of $x^2+y^2-ay=0$
May
26
comment Parametrization of $x^2+y^2-ay=0$
How exactly do you identify $x = \frac{a}{2}cos\theta , y = \frac{a}{2}(1+sin\theta)$ from $\left(\frac{x}{a/2}\right)^2 + \left(\frac{(y-a/2)^2}{a/2}\right)^2 = cos^2\theta + sin^2\theta$ ?