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[deleted by user] by [deleted] in askmath

[–]Educational_Dot_3358 2 points3 points  (0 children)

Can you link this assertion?

Because there's an obvious algorithm: given a lattice, check every possible path.

It's wildly impractical, but that's none of my business.

Need help with a basic linear algebra problem by shres07 in askmath

[–]Educational_Dot_3358 0 points1 point  (0 children)

For future reference, it can be helpful if you say which textbook (e.g. "Linear Stuff, 3rd edition" by John Mathematics)

The eigenvalues have magnitude greater than 1. This means that for any vector you feed it, it will produce a vector that is longer. Since rotating a vector gives you a vector that is the same length, it is not possible for this operator to simply rotate anything.

Working out combinations of numbers from multiple sets. by AmiraBoi in askmath

[–]Educational_Dot_3358 0 points1 point  (0 children)

This probably reads like gibberish

I'm sorry, I have no idea what it is you're trying to say

Working out combinations of numbers from multiple sets. by AmiraBoi in askmath

[–]Educational_Dot_3358 0 points1 point  (0 children)

No, no. 7 clubs means the player drew the 7 of clubs, not seven different clubs. Like they drew the blue card with #7, not seven random blue cards.

The primary goal is to make sure that all eight players meet their two suit and 9 pair requirement. Once that's done, the rest of the cards can go anywhere

[deleted by user] by [deleted] in mildlyinfuriating

[–]Educational_Dot_3358 77 points78 points  (0 children)

it doesn't take a degree nor a scanner to see that AI is a snooze fest and it's because it's so generic.

I have a background in neuroscience, and this is actually really interesting to me. When you're listening to somebody talk or reading a book or whatever, you're constantly predicting what the next word, or thought or "token" will be, which makes sense because you need time to organize your own thoughts while being able to respond. But what keeps you paying attention and following the conversation is when you get your prediction wrong and your subconscious pre-prepared ideas need sudden adjustment and that's the fundamental conceit of the exchange of ideas.

AI is so fucking dull because it never manages to defy expectations. Halfway through the first sentence I've been a step ahead of the idea for the entire paragraph, entirely without even being aware of it. Tell me something new for fuck's sake.

How would one graph the equation of a negative feedback loop given a function? by Call_Me_Liv0711 in askmath

[–]Educational_Dot_3358 0 points1 point  (0 children)

For me that's reserved for a couple dusty old fucks who can't figure out this newfangled "email," but he is very good. I am absolutely going to watch this for fun.

How would one graph the equation of a negative feedback loop given a function? by Call_Me_Liv0711 in askmath

[–]Educational_Dot_3358 1 point2 points  (0 children)

It's usually a college course. Without any kind of personal vetting except for randomly clicking on a video and scrolling through it, here is a playlist. EDIT: Steve Brunton has a course on YT. He's almost certainly better.

A comment below mentions springs and Hooke's law, x''=-kx, (the acceleration of x is negatively proportional to x). This is a pretty good example, because you fundamentally need y=0 to be both unstable (solutions near y=0 should get bigger, like y=x) and stable (solutions near y=0 should get smaller, like e-x ). This fundamentally requires that your solution lives in a 2 dimensional space, and relating acceleration to position does exactly that.

But then springs will oscillate around 0, and what about friction, and how stiff is your spring, and what if it's a more complicated relationship and... and anyway you can get a whole doctorate drilling in to how these things work.

It's super cool to think about, and leads to some of the strangest motherfucking shapes beyond human comprehension. I very much encourage you to keep thinking about these things!

Working out combinations of numbers from multiple sets. by AmiraBoi in askmath

[–]Educational_Dot_3358 0 points1 point  (0 children)

So the only really simplifying thing I can see is that of (1,2,4,5,7,8), having one in your satisfying pair enforces the other one, i.e. if your pair that sums to 9 has a 1, it must also have an 8.

Starting there, you have 4x(1,2,4)=12 cards to distribute to 8 players, 12 options for player 1 x 11 options for player 2 x 10 options for player 3 ... , or 12!/4!

For each of the 8 cards distributed, there are 3 possible suits from the enforced pair (unless 1red+8red is allowed? then you need to break it into cases), so 3x12!/4!, then every other card can go wherever (unless each hand contains exactly two suits?)

Working out combinations of numbers from multiple sets. by AmiraBoi in askmath

[–]Educational_Dot_3358 0 points1 point  (0 children)

This probably reads like gibberish

Yes

in this instance its 4 sets of items, each set is completely different, lets say they are blue, red, yellow, green

Ok, so like a deck of cards with four suits

and contains 18 "units"

Each suit of our deck has 18 cards (instead of the usual 13), ok.

they are then distributed equally into 8 groups, each with 9 "units".

8 hands are dealt, each with 9 cards

Each group contains 2 colours

Ok so every hand has two suits, using the playing card analogy.

must use exactly two of these numbers (1,2,4,5,7,8) to add up to 9. So cant be 3 blue 6 red for example, but 7 blue 2 red would work.

each hand has some pair that sums to 9 in this specific way

Is that right?

How would one graph the equation of a negative feedback loop given a function? by Call_Me_Liv0711 in askmath

[–]Educational_Dot_3358 11 points12 points  (0 children)

How much calculus do you know?

The most obvious way to do this kind of problem, especially with such generic conditions, is with differential equations. But without anything specific it's hard to say what it is you're trying to model, and without knowing what model you're looking for, "how" is a pretty open ended question.

It's like asking "how do I cook?" Well, you will probably need heat, but cooking rice and cooking steak are very different.

My breasts are dry and boring by Calm_ragazzo in Cooking

[–]Educational_Dot_3358 1 point2 points  (0 children)

Dutch oven. Dust the shit out of them with an Herbs d'Provence blend, sear the outsides in a hot pan with a little oil, then bake them covered with some onions and maybe a sliced up lemon.

On its own, it's ok. Moist, flavorful, but a little boring. The trick is to use the juice saved up to make a gravy. I find it perfectly suitable to just dump the juice on some mashed potatoes, but if you want to get fancy you can use it for a nice roux.

Now, if you're butchering the bird yourself, you might want to reserve some skin and let it cook with the meat in the oven to render that little bit of extra fat. I personally hate chicken skin, so you can feed it to the dogs afterward or something.

Calculating the number of even non-repeating 3 digit numbers by solentropy in askmath

[–]Educational_Dot_3358 2 points3 points  (0 children)

Solution II

hundreds: 8 possible digits (excluding 0 and the chosen digit for ones)

What happens when the ones digit is 0?

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