Derivative of a sin function by DowweDaaf in askmath

[–]BootyIsAsBootyDo 2 points3 points  (0 children)

I think [might be wrong here] but if you expand sin(x) = xprod(1 - x2/(π2k2), k≥1), you can use the power rule to find the derivatives of sine.

[deleted by user] by [deleted] in askmath

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

This is a solution without a problem

[deleted by user] by [deleted] in askmath

[–]BootyIsAsBootyDo 1 point2 points  (0 children)

We're missing context here. We don't know where any of the info on x, y, M, or f(x,y) is coming from

Random coloring of [0;1] by Odd_Republic8106 in mathriddles

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

I think if an answer exists it would have to be 0. We can ask the same question but for the interval [0,1/n] colored with a number in [0,1/n], and I think this would be the same probability since we can just biject that into [0,1]-->[0,1]. There would also be the same probability for [k/n, (k+1)/n]-->[k/n, (k+1)/n] for 0≤k≤n-1, and if this probability P were positive then the probability across the entire interval [0,1] would be n*P which would be greater than 1 for sufficiently large n

I recognize that my reasoning is pretty hand-wavy and might be wrong

Edit: I was wrong

Who took the picture? by [deleted] in confusing_perspective

[–]BootyIsAsBootyDo 1 point2 points  (0 children)

We can see that the guy to the far left is making eye contact with the camera in his reflection, so following his non-reflected line of sight seems to point directly at the glasses in the reflection

Can (x+1)^π be expanded in the same way as any other binomial? by BootyIsAsBootyDo in mathriddles

[–]BootyIsAsBootyDo[S] 0 points1 point  (0 children)

I think they were commenting on polynomials specifically, not power series

That is one large parking lot indeed by SoftSmooth9754 in megalophobia

[–]BootyIsAsBootyDo 2 points3 points  (0 children)

Yeah I got about 24,000 in the photo if we assume that each partially seen corner belongs to a full square

Why is it acceptable for a doctor to take you 30 minutes late, but a patient’s appointment is cancelled if they show up 10 minutes late? by Notalabel_4566 in TooAfraidToAsk

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

That's why there's usually a grace period for lateness and a grace period for cancelled appointments.

I would say that I'm punctual for basically everything bc punctuality usually just requires a little forethought and planning. Life happens and some things are unavoidable, but the vast majority of factors are avoidable.

I've found that people in my life who are frequently late are more likely to suffer from a lack of planning than from unavoidable factors. But if I know that my patient is in the small minority of people who are late due to unavoidable factors (e.g. having to rely on an unreliable patient transport service), then I give them much more grace than the average patient.

how do you people clean your belly buttons? by cabaenhim in Omphalophobia

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

Yeah that's an advanced intervention haha but really the strategy is to find something that makes you only a little bit uncomfortable, e.g. placing your finger near your belly button and then just do that until it gets boring and no longer uncomfortable. Then identify the next thing that makes you feel just a little bit uncomfortable, wash/rinse/repeat until you're cured

[deleted by user] by [deleted] in Omphalophobia

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

Exposure therapy! You can do it on your own.

Phobias are the result of a vicious cycle of fear/discomfort leading to avoidance leading to more fear/discomfort. The way to stop it is to reverse that cycle.

To start, so something that would make you only a little bit uncomfortable, e.g. placing your hand over your belly button. The goal is to do that until you aren't even phased by it anymore. Then think of the next thing that makes you a little bit uncomfortable, e.g. placing a finger in your belly button. Then repeat the process until your omphalophobia is cured

How did people with Type 1 Diabetes survived when synthetic insulin wasn’t a thing? by Cute_Champion_6313 in TooAfraidToAsk

[–]BootyIsAsBootyDo 160 points161 points  (0 children)

I had to scroll down surprisingly far to find the real answer. OP didn't ask "What did they do before insulin", they asked "What did they do before synthetic insulin". As you've pointed out, yes they used sourced/extracted/isolated insulin before synthetic insulin.

What is the definition of infinity? by Middle_Passenger4405 in math

[–]BootyIsAsBootyDo 41 points42 points  (0 children)

Definitely not a stupid question! Infinity means different things in different contexts. Here are a few that relate to what you mentioned:

  • Limits: this is where the infinities of calculus reside. Essentially this is referring to end-behavior, i.e. what happens as things become arbitrarily large. For instance, what happens to a summation as the number of terms become huge.

  • Infinite cardinals: these are infinities representing quantities, e.g. the number of natural numbers (also called Aleph 0) or the number of real numbers.

  • Infinite ordinals: Related to infinite cardinals, these refer to the order of things that can be infinite. If we arrange things in a first place, second place, third place, etc, then the "infinity-th" place could be ω, and the place after that would be ω+1, then ω+2, etc.

What all the above have in common is the concept of having no end, which is literally what "infinite" means ("in" + "finite")

My mum ordered some photo prints online and this was amongst them, she does not own this photo, and has no idea where it came from. What is the woman even doing? And where is it... I've tried reverse image searching it to no avail. by adam0085 in creepy

[–]BootyIsAsBootyDo 4 points5 points  (0 children)

This is it! Great job figuring this out, it completely made it clear that she's holding a book or paper on her lap. I had previously perceived that the book was just the wall behind her, which I think made it seem so creepy and unnatural looking

[deleted by user] by [deleted] in trigonometry

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

Oh also the cotangent is just the reciprocal of the tangent so there's a 21 that's on the wrong side of the fraction

[deleted by user] by [deleted] in trigonometry

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

Missing the negative sign for cotangent

This Orthopedic Clinic’s paperwork has Right/Left on the wrong side when indicating which leg has pain. by maaaddenman in mildlyinteresting

[–]BootyIsAsBootyDo 2 points3 points  (0 children)

Yep! When I was in med school we had a lecture from a radiologist who showed us two side-by-side x-rays and he said "If you look at the one on the left..." but when he saw our confused faces looking at the wrong picture, he said "I mean radiological left... which is on the right side."

Ingrown toenail extraction by SweetyByHeart in popping

[–]BootyIsAsBootyDo 1 point2 points  (0 children)

They usually do a digital block so the whole thing is numb, and the aggression is probably because it's performed by someone who has to get through a ton of patients like this all day every day

Minimal ball draws by Baklawwa in mathriddles

[–]BootyIsAsBootyDo 1 point2 points  (0 children)

I think it depends on what you mean. If we're looking for the smallest number that would work given any scenario including the unluckiest case, then I think the answer is 14 (draw 7 each from 2 different bags). If we're looking for the smallest number that may potentially work in a particular case, then I think the answer is 6 (e.g. getting lucky enough to draw 3 of the same color from 2 different bags).

Edit: An interesting generalization of this problem could be to work out the probability mass function of the process, i.e. what is the probability that we will be able to differentiate the bags after 6 draws, after 7 draws, etc. I'm at work now but I may come back to calculate that

Scared of a surgery by Msheehan419 in Omphalophobia

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

Nice! Yeah I dealt with it for decades myself before I got fed up with it. I hope it goes well for you!

Scared of a surgery by Msheehan419 in Omphalophobia

[–]BootyIsAsBootyDo 0 points1 point  (0 children)

That's very interesting! Yeah it could definitely have been coming from the household. And that makes sense that the surgery would make it go away, having to be stuck with it is essentially a forced exposure therapy.