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seen Jan 15 at 6:14

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comment How to make Fourier behave like FourierTransform?
Plot of Sin[x]. When I try using the plotting method that you used above for Sin[15 x] + Sin[x] + Cos[x 30], I get only two visible points, instead of the 6 peaks that the discrete version comes up with. Perhaps the plot functionality can't pick up on the narrow point. It's also interesting that the Filling doesn't show up in your second to last image.
Jun
21
comment How to make Fourier behave like FourierTransform?
Very helpful explanation. +1 I went with yulinlinyu's answer as it does a good job of matching that initial image, but really I'm now interested in knowing how to make the continuous fourier transform behave like the images in your post. Perhaps I'll be able to figure that out will all of this info!
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comment How to make Fourier behave like FourierTransform?
@yulinyulin and image_doctor Thank you both! Now, to try to determine what the heck this code is doing! Any further explanation would be helpful :)
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accepted How to make Fourier behave like FourierTransform?
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19
comment How to make Fourier behave like FourierTransform?
Sin[x], I think. Although, if I do a FourierTransform without UnitStep my graph is blank and/or constant.
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