this post was submitted on 08 Nov 2025
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Science Memes

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top 33 comments
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[–] KurtVonnegut@mander.xyz 43 points 2 months ago (1 children)

She's going to find out he is stuck on on his E^x

[–] HootinNHollerin@lemmy.dbzer0.com 25 points 2 months ago
[–] PartySlices@lemmy.world 21 points 2 months ago (2 children)

Reminds me of a fun joke!

A constant and e^x were walking down the street. They see a differentiator coming, and instantly the constant gets scared shitless. The differentiator comes up, and as expected, POOF, the constant is gone. e^x starts laughing and says "nice try, can't touch me". But the differentiator tips his hat and responds "is that right?", then throws off his coat and shows that he is d/dy.

[–] ChaoticNeutralCzech@feddit.org 3 points 2 months ago (1 children)

The result is 𝑦 = ⅟ₓ, right?

[–] Papergeist@lemmy.world 24 points 2 months ago (1 children)

No e^x doesn't have a 'y' and so it also acts as a constant.

[–] ChaoticNeutralCzech@feddit.org 9 points 2 months ago* (last edited 2 months ago) (1 children)

Oh, I was thinking of it as 𝑦 = 𝑒^𝑥^ or 𝑥 = ln 𝑦, whose derivative in respect to 𝑦 is 𝑥 = 1/𝑦 (for 𝑦 > 0) or 𝑦 = 1/𝑥 (for 𝑥 > 0). Your interpretation is that the 𝑦-axis is non-existent or named differently, which is why I'd prefer the joke to say d/d𝑡 for less ambiguity, as @anothercatgirl suggested.

[–] anothercatgirl@lemmy.blahaj.zone 2 points 2 months ago (1 children)

yayaya, or in other cases like multiple independent variables, I'm not sure because it's been 6 years since I took calculus

[–] MOCVD@mander.xyz 2 points 2 months ago

The general form would be implicit differentiation! d/dx dx/dy e^x = e^x dx/dy

[–] ChaoticNeutralCzech@lemmy.ml 3 points 2 months ago* (last edited 2 months ago)

Nobody exp(x) the y-derivation!

[–] prole@lemmy.blahaj.zone 20 points 2 months ago (1 children)

It's nice to see memes like this and be surprised that I don't actually forget all of the calculus I ever learned

[–] 1984@lemmy.today 2 points 2 months ago

For me all that calculus I did has not been used in life ever afterwards. :)

[–] Illecors@lemmy.cafe 20 points 2 months ago (3 children)

Any explanation for the mathematically challenged?

[–] ChaoticNeutralCzech@feddit.org 45 points 2 months ago* (last edited 2 months ago) (3 children)

She is derivation, a transform of functions that describes rate of 𝑓(𝑥) changing as 𝑥 changes. (This can be represented visually as the slope of the graph 𝑦 = 𝑓 (𝑥).) He is the exponential function 𝑒^𝑥^, which is the only* non-zero function whose derivative is itself - in other words, unaffected by derivation. The number 𝑒 is a constant (around 2.718) and the base of natural logarithms, hence the title.

* except its multiples such as −2 𝑒^𝑥^, which are... just... uh... derivative works

[–] Illecors@lemmy.cafe 6 points 2 months ago

Much appreciated!

[–] felsiq@piefed.zip 1 points 2 months ago (1 children)

the only* non-zero function whose derivative is itself

* except its multiples such as −2 𝑒𝑥, which are... just... uh... derivative works

I think you forgot about e^x + 1, and e^x + 2, and … …

(My profs always dunked on me for forgetting the + c and I can’t resist doing it to someone else, I’m sorry)

For real tho, great explanation

[–] knomie@feddit.org 6 points 2 months ago (1 children)

But the derivative of e^x+c is just e^x (which for c!=0 is not the same). That's why the +c is added during integrating because all +c is derived to 0 and thus indistinguishable.

[–] felsiq@piefed.zip 2 points 2 months ago

I wish I could say I commented this late at night or something, but nope I’m just dumb lmao thanks

[–] arschflugkoerper@feddit.org 18 points 2 months ago

The derivative of e^x is e^x

[–] ManeraKai@programming.dev 11 points 2 months ago (2 children)
[–] teft@piefed.social 12 points 2 months ago* (last edited 2 months ago)

If you want to use exponents on the fediverse you have to enclose the entire exponent in carats like so without the spaces:

e ^ x ^

e^x^

[–] anothercatgirl@lemmy.blahaj.zone 2 points 2 months ago (1 children)

how about derivative with respect to time instead of with respect to x?

[–] ChaoticNeutralCzech@feddit.org 11 points 2 months ago (2 children)

 𝑒^𝑥^ has been around since the 17^th^ century and it hasn't changed since. Therefore, it's a constant with respect to time and gets unceremoniously derived to 0.

[–] NobodyElse@sh.itjust.works 3 points 2 months ago

Well played!

[–] anothercatgirl@lemmy.blahaj.zone 3 points 2 months ago

very nicely said, I agree

[–] abbadon420@sh.itjust.works 12 points 2 months ago (2 children)

Couldn't figure out how to do superscript. But you know I watch 3b1b. I'm not sure if this meme actually fits though.

[–] ChaoticNeutralCzech@feddit.org 16 points 2 months ago (1 children)

Here, have this:
𝑒ˣ
ᵈ⁄d𝑥

Even plain text textboxes can do fun stuff if there is good Unicode support

[–] sartalon@lemmy.world 4 points 2 months ago (1 children)

My favorite thing about Laplace and Fourier transforms was making a fabulous looking F and L.

Their functions are so fucking spectacularly useful, but I just loved writing it out.

[–] ChaoticNeutralCzech@feddit.org 2 points 2 months ago* (last edited 2 months ago)

Mine too! I looked through all of Unicode and they don't have the awesome-looking L I know from college, only the "script" variant.

[–] teft@piefed.social 3 points 2 months ago* (last edited 2 months ago)

Carats on both sides of the exponent so ^ x ^ but without the spaces. e^x^

[–] mat@jlai.lu 11 points 2 months ago
[–] Prontomomo@lemmy.world 3 points 2 months ago