#general · Neon Genesis Phijkchu

Jaz Apr 10, 2024 10:53 AM general

🙏

Dolfin Apr 10, 2024 1:47 PM general

Replying to reorruatrnte #toughbrook

https://www.independent.co.uk/news/world/americas/rare-blue-lobster-found-off-us-coast-9690065.html

media.tenor.com

legorhin Apr 10, 2024 2:21 PM general

any cool math people want a fun problem?

bob Apr 10, 2024 2:21 PM general

the answer is that I have aids

Spooky Phijkchu Apr 10, 2024 2:22 PM general

Hey, it's that fucking R

Spooky Phijkchu Apr 10, 2024 2:22 PM general

we were just trying to explain that to retards

legorhin Apr 10, 2024 2:22 PM general

i just realized it should probably be a C but it doesn't change the answer

heir Apr 10, 2024 2:23 PM general

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Dialga Apr 10, 2024 2:23 PM general

why is there a fancy R in my math

Dialga Apr 10, 2024 2:23 PM general

x and y were bad enough

Spooky Phijkchu Apr 10, 2024 2:23 PM general

it means by solving it, the math becomes real

Spooky Phijkchu Apr 10, 2024 2:23 PM general

it's a spell

legorhin Apr 10, 2024 2:23 PM general

that's just to indicate x is a 4 element vector

heir Apr 10, 2024 2:23 PM general

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Dane Apr 10, 2024 2:26 PM general

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🐝🌯🌯🌯💥 Apr 10, 2024 2:28 PM general

It means its a team rocket problem

Polar_ Apr 10, 2024 2:35 PM general

Replying to legorhin #jazardly

any cool math people want a fun problem?

What's the S

Polar_ Apr 10, 2024 2:36 PM general

Secret?

legorhin Apr 10, 2024 2:38 PM general

that's not an S

legorhin Apr 10, 2024 2:39 PM general

its the partial derivative notation

Polar_ Apr 10, 2024 2:39 PM general

Oh god.

Phijkchu_Pikachu Apr 10, 2024 2:45 PM general

I do not know what a DFT is, is FT fourier transform?

Polar_ Apr 10, 2024 2:46 PM general

Yes

Polar_ Apr 10, 2024 2:46 PM general

I googled it

legorhin Apr 10, 2024 2:46 PM general

its the discrete fourier transform, which is what the FFT algorithm implements

Phijkchu_Pikachu Apr 10, 2024 2:47 PM general

Oh discrete

Phijkchu_Pikachu Apr 10, 2024 2:47 PM general

okay

Phijkchu_Pikachu Apr 10, 2024 2:48 PM general

I was drawing a blank

legorhin Apr 10, 2024 2:52 PM general

I cleaned it up a bit

Polar_ Apr 10, 2024 2:53 PM general

Replying to legorhin #jazardly

I cleaned it up a bit

If the R is the Realness spell, what's the C

legorhin Apr 10, 2024 2:53 PM general

complex

Polar_ Apr 10, 2024 2:53 PM general

It's ok I have time

Polar_ Apr 10, 2024 2:53 PM general

:^)

Mini Apr 10, 2024 3:19 PM general

heir Apr 10, 2024 3:20 PM general

huh

Gent Apr 10, 2024 3:20 PM general

There was something else written beforehand

legorhin Apr 10, 2024 3:53 PM general

here's what i think the solution is

SPOILER_image.png 26.7 KiB · captured_local

Polar_ Apr 10, 2024 3:57 PM general

Replying to legorhin #jazardly

here's what i think the solution is

Leg this is hieroglyphic to me, but pls lmk if I follow. This is a function (of sin(t/2)) made to be a continuous matrix? Because what was given was limited and you wanted it continuous?

legorhin Apr 10, 2024 3:58 PM general

the second part is me factoring out the factor sinh(t/2)

legorhin Apr 10, 2024 4:00 PM general

the form of the solution of the problem fits a matrix exponential, and these are how to write the matrix out fully

Polar_ Apr 10, 2024 4:01 PM general

media.tenor.com

legorhin Apr 10, 2024 4:01 PM general

e^tF but written out

image-c7581a7a9aaf8acc.png 564 B · captured_local

legorhin Apr 10, 2024 4:03 PM general

and there's probably some missing boundary condition stuff in the initial problem setup

Wuvwand Apr 10, 2024 4:54 PM general

Ugh I’ve been out of calculus for too long but also not long enough

Polar_ Apr 10, 2024 4:57 PM general

I like understand the underlying baby calc/trig stuff, but that's it. I'm not even on the discrete part, but the Fourier Transform is cool. The example I watched was about sound waves.

legorhin Apr 10, 2024 4:57 PM general

if you don't know how to do matrix exponentials this will never make sense

Polar_ Apr 10, 2024 4:57 PM general

Replying to legorhin #jazardly

if you don't know how to do matrix exponentials this will never make sense

I will not stop trying, for like another half an hour

legorhin Apr 10, 2024 5:53 PM general

here's simplified as best as I can with hopefully no algebra errors

legorhin Apr 10, 2024 5:53 PM general

I wonder if this function has a name

image-f09f09c521db7732.png 760 B · captured_local

legorhin Apr 10, 2024 5:56 PM general

oh there's a typo

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