pegglegg back in fifth grade: 'why i need to learn this math stuff. i aint never gunna use it'
this post was submitted on 11 Apr 2025
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It's not that you will regularly have a calculator in your pocket
Checkmate
you still need to know what buttons to push on the magic box, and in what order...
And how long to push them.
Yeah the "checkmate" was supposed to signify that irony
"It's not like you'll regularly have a little box in your pocket with access to the sum of all of the knowledge in the world but you'll have to sift through an equal amount of incorrect knowledge and have the ability to differentiate the two."
That kind of math didn't start for me until letters started showing up in it. This is basic shit though!
It's only the same if it's up 10% compared to the original number. It all depends on your time period, you could be up 30% compared to 7 years ago.
Tesla stock prices are good example of this. They are down ~50% since december and up ~70% since lowest point in april last year.
This is why in forecasting and time series analysis is used the log difference, a 10% increase or decrease on the log scale gives you the same value being added or removed.
Yes, that requires a reference value to be decided upon beforehand.
Not really, you do t=n and t=n+1, for n= 1, 2, 3 for a quick view on volatility.
Then ypu look up for correlations between e[t=n | t= 0, t= 1...] for different Ns. For more I would need to check out my notes
Oh I was imagining something entirely different. Like a simple logarithmic scale of a signal, I do not know anything about time series analysis. Should've kept my mouth shut
Multiplication is commutative dipshits.
A x B = B x A
So 1.1 x .9 is always going to be .99, regardless of the order. Didn’t we learn this in like middle school?
(Edit … to be clear I’m calling the people in the image dipshits, not the people commenting here).
Huh? We're talking about percentages not multiplication. Where'd the 1.1 and .9 come from?
If you increase something by 10% you’re doing this:
(10% • X) + X
(.1 • X) + X
1.1 • X
So you’re just multiplying the original value by 1.1. Similarly for subtracting 10% you’re multiplying by .9
So the order in which you add or subtract 10% doesn’t matter. You always get the same number.
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Bunch of methamagicians up in here
What's it called when you "tether" a certain value at 100%. Often for economic graphs. In that case the second guy could be correct and if that's all they know it would make sense
I wonder why he has a peg leg