Calculating π by hand: bonus k=1 working out

Chudnovsky algorithm by hand bonus: k=1

This is all the Chudnovsky algorithm set-up for k=1. Including a better approximation of sqrt(10,005).

Watch the main video:

This video was filmed at Queen Mary University of London.

CORRECTIONS
- None yet. Let me know if you spot anything!

Thanks to my Patreon supporters who enable me to spend a day doing a lot of maths by hand. Here is a random subset:

Christopher Samples
Sean Dempsey-Gregory
Emily Dingwell
Kenny Hutchings
Rick de Bruijne

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Music by Howard Carter
Filming and editing by Trunkman Productions
Audio mastering by Peter Doggart
Design by Simon Wright

MATT PARKER: Stand-up Mathematician

[TomazzA]

15:39 “that 2 on the end is going to become a 1”... :(

[ikchess]

The fact that this has still only got 52629 view is a travesty.

Literally cannot tell you how helpful it is to have Matt mutter about numbers on one screen while I write on another :D

[radioactivespaghetti]

Hey, a really great formula I like to use for approximating square roots

, /x~,/p + x-p/2, /p

Where x is the number you are trying to get the square root of and p is the nearest perfect square to x

PS (, / - square root sign) ( / - normal division sign)

[marijnl]

204 positive thumbs and 0 negative ones and counting...

[aleksamihajlovic]

He didnt shorten 720 and 6 omg Imma kms

[VideosRunescapeu]

"just wasn't that well attached to the wall if i'm being honest"; even the second time, that made me laugh my ass off

[lnorlnor]

Is it driving anyone else nuts that he doesn't just divide the 720 by 6 straight away?

[TooManyEditsProductions]

Matt: the semi bald man who steals whiteboards

[origamikatakana]

This really brings in to perspective just how remarkable modern computing power is.

[steveb.]

I think you have stumbled upon a a new mathematical axiom...
Parker's Pi Series Postulate :
Convergent series for Pi which are easy to calculate by hand do not converge quickly.
Convergent series for Pi which do converge quickly are not easy to calculate by hand.

[enricgarrigasanchez]

At 1:20 you did wrong yhe sum. 5+3=8, not 12?!?!?!

[johncrwarner]

Have you heard of cancelling the six with the 720 and a factor of ten - not sure you've done much hand calculation recently LOL

[Retsbew]

When doing the final subtraction, shouldn’t it have been a zero in the ones place, as you were taking 1.3... away from 2?

Edit: just watched the rest of the main video, where you address it. Nevermind 😄

[GriffenKing]

You did the second term on the second channel please tell me your not going to do each term on their own channel. 🤣

[HissingStone]

13:53 look how well the cup and the table border matches, I've honestly thought that the cup was transparent

[dalitas]

Don't you just love when the mathematical reasoning has "-ish" at the end of the sentence! my favorite way of doing maths!

[seangrand]

1:45 why not divide 720 by 6 to get rid of the 6 at the bottom and then just get

[angrystickfig]

Fractions are your friend; the calculation for y would have been easier (albeit only a bit easier) if you had used 3/8000 instead of 0.0003125

[General_Nothing]

I had to pause the video at “the board... just wasn’t attached to the wall very well, if I’m being honest, ” because I was laughing too hard.

[rituchandra]

My Maths teacher used to say, believe in division and not multiplication... if you had in the part when dividing the numerator and denominator, if you cancelled the 720 and the 6, you would have gotten simplifying alot of the work BTW AWSOME VIDEO AND AMAZING MATHS !!! LOVE IT