this post was submitted on 18 Oct 2024
449 points (95.5% liked)

Curated Tumblr

3850 readers
815 users here now

For preserving the least toxic and most culturally relevant Tumblr heritage posts.

Image descriptions and plain text captions of written content are expected of all screenshots. Here are some image text extractors (I looked these up quick and will gladly take FOSS recommendations):

-web

-iOS

-android

Please begin copied raw text posts (lacking a screenshot that makes it apparent it is from Tumblr) with:

# This has been reposted here to Lemmy as part of the "Curated Tumblr Project."

I made the icon using multiple creative commons svg resources, the banner is this.

founded 1 year ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[โ€“] [email protected] 1 points 7 hours ago (1 children)

Those are quite far from mental arithmetic though

[โ€“] [email protected] -1 points 7 hours ago

Calculus is generally pretty easy to do mental arithmetic on, especially when talking about real-world situations, like estimating the acceleration of a car or something. Those could have multiple answers, but one won't apply (i.e. cars are assumed to be going forward, so negative speed/acceleration doesn't make much sense, unless braking).

Math w/ quantum states is a bit less applicable, but doing some statics in your head for determining how many samples you need for a given confidence in a quantum calculation (essentially just some stats and an integral) could fit as mental math if it's your job to estimate costs. Quantum capacity is expensive, after all...