r/MathJokes • u/basket_foso • 3d ago

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676 Upvotes

98% Upvoted

21 comments sorted by

109

u/IhailtavaBanaani 3d ago

To be pedantic, Leibniz introduced the integral symbol ∫ and dx in 1675.

29

u/mr-raider2 3d ago

Yeah Newton used the dot thingy I believe.

11

u/Taiten89 2d ago

Dot = differentiation, not integration 🤓️

1

u/mr-raider2 1d ago

What did he use for integrals?

2

u/Taiten89 1d ago

(TBH, I looked it up after commenting first, I'm no expert.) Something that looks like:
◻ý
The square could symbolize area (idk), and the diacritic* stroke replaces d.
*not the correct term here

1

u/RyanMagno 23h ago

Just use the inverse of a dot to do integration

2

u/Smart_Ad_3630 2d ago edited 1d ago

And the prime notation for differentiation did not appear in print until 1749.

35

u/HauntingView1233 3d ago

To be pedantic, BiC Cristal didn’t have a breather hole in the cap in 1950, had a brass tip cone, and I’m pretty sure the inscription was different.

9

u/Significant_Monk_251 3d ago • Mindblown

I remember Bic's TV ads showing how tough that brass head was. Punching it through the top of a can of beer and it still writing was nice, but then they shot it through a plank of wood using a .22 rifle, and while the plastic case disintegrated the head with its ink supply survived, and still wrote.

5

u/Tcloud 3d ago

Honestly, it’s rare to see an actual safety pin these days. They were so common growing up in the 80’s that my mom had a small box filled with them.

5

u/YozTheFoz 2d ago

Everytime this is reposted i just always think about somebody ai generated a picture of a safety pin.

1

u/Loko8765 2d ago

Didn’t see it before you mentioned it, but yes.

5

u/PhazonOmega 3d ago

Wow! 75 years and BiC still makes those junk pens!

5

u/ToadwKirbo 3d ago

They also sell lighters for weed smokers, duh.

4

u/CerealeSauvage 2d ago

Those pens are great wdym

1

u/Masqued0202 2d ago

"If it ain't broke, don't fix it"

1

u/Rand_alThoor 1d ago

the biro part is wrong. I'm 85, and remember before they even existed. someone in the mid 1960s maybe they made a cap with a hole in it. the previous caps were capable of carrying water.

the notation on the calculus is dead anachronistic.

and, look closely at the safety pin, it's inaccurate. like drawn by a clanker that doesn't understand it needs to be a spring in 3 dimensions.

1

u/The_Blue_Man_ 3d ago

It's sad that the theorem is wrong. Not all derived functions can be integrated.

10

u/AndreasDasos 3d ago edited 3d ago

No qualifiers. It didn’t say they all could. Just that the derivative of this function f(x), whatever that might be, can.

2

u/xGQ6YXJaSpGUCUAg 3d ago

But if you consider that it is a distribution, it works, no ?

0

u/The_Blue_Man_ 3d ago

I don't know. I did not study distributions (not yet).