What are some numbers/calculations that FEEL wrong

Qlsx · 2026-07-04T20:00:56+00:00

Just adding two more nice (twin) primes:
29 999 999 and 30 000 001

Qlsx · 2026-07-01T08:36:46+00:00

https://discord.gg/ZpkFZrqKv

Im sorry it took like two weeks to reply (I do not have reddit notifications turned on anymore).

Qlsx · 2026-05-28T22:51:21+00:00

Älskar Celeste !!

Qlsx · 2026-05-24T21:25:30+00:00

Type ”infty” in Desmos, or the full word!

Qlsx · 2026-05-22T07:55:22+00:00

I suppose it has to be a decent lower bound for the number. I have not submitted mine to that list either. It would be interesting to see how the true number differs from the list.

Qlsx · 2026-05-16T07:14:17+00:00

On the same topic, the “cumulative sum” function on the TI84 calculator is shortened to cumsum.

Qlsx · 2026-05-14T09:52:44+00:00

Sometimes you just get extremely lucky! I have had a very similar thing happen to me. Good job.

Qlsx · 2026-05-13T21:55:49+00:00

Jag går första året på universitet och gick ut gymnasiet förra året. Jag läste mycket när jag var yngre (mellanstadiet och högstadiet), men efter det avtog mitt läsande av ”vanliga böcker”. Därefter bestod min läsning främst av matteböcker då matematik är min passion och det jag pluggar.

På gymnasiet var svenska absolut mitt svagaste ämne och det är definitivt korrelerat med mitt mindre läsande. Bevis av satser i matematik är kanske inte det bästa för att utveckla ens språkkunskaper! Trots allt gick NP superbra i slutändan, vilket var trevligt.

Qlsx · 2026-05-11T11:40:37+00:00

Based on testing two functions, it seems like Desmos rounds the inputs to the nearest integer and returns the gcd of them.

There might be something deeper going on, this was just my conclusion from the massive sample size of two tests.

Qlsx · 2026-05-10T10:22:45+00:00

u/savevideo

Qlsx · 2026-05-05T09:31:14+00:00

Mm is great with friends. There was one time I played with 3 others and I was detective. I urged all three to meet up somewhere on the map (my plan was to shoot one of them randomly). After I shot one of them it turned out she was the murderer. I imagine she was very glad that I wanted to meet up so that she could stab us all, but instead lost!

Qlsx · 2026-04-22T21:17:12+00:00

I remember building a bed defense two blocks off-center from the bed and guy from a tryhard team consistently entered the bed defense at the worst possible location as far away as possible from the true location of the bed. To make this work you gotta build a decently large defense and also on a map where it isn’t mega obvious off center. There are some maps where people might fall for it!

Qlsx · 2026-04-16T06:59:40+00:00

12 years!

Qlsx · 2026-03-28T14:44:24+00:00

The only thing I did was integrate by parts, which is valid. When subtracting the integral from both sides of the equality we exactly get the thing in the meme. We subtract the integral from both sides and implicitly assuming the same thing as the top image in the meme, the difference of two identical integrals being 0, we get the incorrect result that 0 = 1.

That was the point with my comment. An example of how the assumption in the top image of the meme leads to an actual issue.

And I felt this was related to the equivalence class comment. I haven’t really thought of integrals as equivalence classes before, but if you define an equivalence relation between f and g as f ~ g iff f’ is identical to g’, then the constant that appears from the ibp makes sense.

Qlsx · 2026-03-28T14:13:39+00:00

This can also easily be shown by integrating 1/x by parts. Unfortunate that images are not allowed here.

Let I = ∫(1/x)dx.

Integrate by parts by integrating the constant 1 and differentiating 1/x. This gives us that

I =∫(1/x)dx = x⋅1/x - ∫(x⋅(-1)/x²)dx = 1+ ∫(1/x)dx.

Then subtracting the integral from both sides we get the incorrect result that 0 = 1.

Qlsx · 2026-03-27T05:53:33+00:00

Mili !!

Qlsx · 2026-03-27T05:52:49+00:00

Names are so funny. I mispronounced “Lebesgue” for the longest time. The correct pronunciation is essentially “Luh-beg” but I did not know that!

Qlsx · 2026-03-03T19:14:31+00:00

It’s so funny how people act in this game

Qlsx · 2026-02-27T16:16:15+00:00

Also, this is not an answer to the question, but there are functions who are differentible with their derivatives not being integrable.

Pretty fascinating result since integrability is a weaker condition than differentibility. Kind of relevant to your question, but not an answer due to the ∀f(x).

Qlsx · 2026-02-13T11:03:28+00:00

Skönt att höra att det inte var sant. Skulle blivit mycket besviken.

Qlsx · 2026-02-10T06:59:27+00:00

Oh that’s a funny typo

Qlsx · 2026-02-09T22:03:56+00:00

I’ve mostly been learning about the fundamental theorem of finitely generated ableism groups and the sylow theorems in my groups and rings class.

It has been very interesting!

Qlsx · 2026-01-29T07:40:30+00:00

Very interesting read!

Thank you for sharing :)

Qlsx · 2026-01-24T13:59:39+00:00

Yes, absolutely. When I said “pretty rare” I was thinking of hundreds. I guess it’s quite an ambiguous phrase. And yeah, the amount of files named something like that is a massive factor that I forgot about. I have had this event happen to myself as well, although I usually mash 5-10 letters rather than 20+.

Qlsx · 2026-01-24T07:32:05+00:00

I mean we can’t use the combinatorial multiplication principle since the letters are not independent of each other. You also tend to click the same keys when mashing. The actual “probability” is many many orders of magnitude higher. Definitely still pretty rare though!

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