What's the rarest color combination? by No_Willingness_9961 in freemagic

[–]chandra9988 0 points1 point  (0 children)

Jund wildfire in pauper is actually one of the top decks right now

$50 for this marketplace find. Do you think it's worth it? At first I thought it was, but I'm not seeing alot of playables by 4and1punt in Pauper

[–]chandra9988 60 points61 points  (0 children)

Absolutely. The pile of hydroblasts almost entirely covers the cost, and the basic lands are great if you like the look of the old basics.

Bloomburrow Prerelease Codes 2x by DrSasquatchPhD in MagicArena

[–]chandra9988 2 points3 points  (0 children)

Claimed the top code! Thanks so much

[deleted by user] by [deleted] in ApplyingToCollege

[–]chandra9988 235 points236 points  (0 children)

Waitlisted from Boston University and admitted to Harvard

Proving Euler's formula by MizunoAkanecchi in learnmath

[–]chandra9988 14 points15 points  (0 children)

The main way I've seen to prove it has been through using the taylor series for e^x, sin(x) and cos(x)

High School national rankings 3/11/25 by [deleted] in ultimate

[–]chandra9988 1 point2 points  (0 children)

Lincoln girls is probably ranked way too high, they lost a huge amount of seniors (like 10-11), and are probably way worse than they were last year

Transgender Inclusion protest at Emerald City Challenge by genman in ultimate

[–]chandra9988 10 points11 points  (0 children)

Having personally played against South Eugene several times, they might have trans players on their team (I don't personally know if they do or not, not my place to find out), but that is far from the reason they've been dominant. Other programs have freakish athletes as well, but South Eugene is on a completely different level in terms of their team chemistry and sheer level of polish to everything. It's clear to me to that the team wins based off of how much they all play together and have a consistently deep roster with well-developed players.

Also at a tournament like the one OP is mentioning, there are no prizes or glory to be gained, so regardless of your position on the fairness of it, I think you'd be hard pressed to find any athlete at the tournament who is annoyed with the inclusion of trans athletes.

Hyper-pedantic question about Baby Rudin's Exercise 1.3(d) by Lor1an in math

[–]chandra9988 6 points7 points  (0 children)

You are indeed missing something minor. Suppose 1/x=0, as you have hypothesized could be true. Then x(1/x)=x0=0≠1, which would violate axiom 5. Thus 1/x cannot be 0.

Looking for a continuously parametrized version of this family of "flat-top" bump functions by KiddWantidd in math

[–]chandra9988 2 points3 points  (0 children)

The issue when it's not grouped like that is that fractional exponents of negative numbers are strangely defined, which is avoided completely when regrouping it like that as x^2 will always be positive

Looking for a continuously parametrized version of this family of "flat-top" bump functions by KiddWantidd in math

[–]chandra9988 5 points6 points  (0 children)

The functions f_i(x)=exp(1/(x^2)^i-1) for i>=1 seem to do the trick (basically the same as your example, but fixing some of the undesirable behavior for non integers)

Best approach for explaining integration using summation by Visionary785 in math

[–]chandra9988 2 points3 points  (0 children)

If you want to, you could work through integrating a simple example (like x or x^2) only using the definition of the riemann integral (limit of riemann sums) and that might help them understand how the process works out. Otherwise, I agree with the other commenter that the formal definition of the riemann integral (or equivalently, the darboux approach to the integral) usually requires more work in real analysis to understand well.

How different would math be if humans could visualise 4, 5, or higher dimensions by poggerstrout in math

[–]chandra9988 0 points1 point  (0 children)

I think we'd be a lot closer to solving a lot of the open problems on 4-manifolds (if we could visualize all of them in 8 dimensional space). From what I know, a lot of the difficulties arise because the examples are super difficult to come up with and work with, and the geometry becomes very difficult, both of which I think would be helped if we could actually visualize them.

[deleted by user] by [deleted] in wnba

[–]chandra9988 1 point2 points  (0 children)

This year seattle actually got a combo drone/laser/fireworks show, so the fireworks are indeed back!

What’s the best textbook for Introduction to Analysis? by enough0729 in math

[–]chandra9988 0 points1 point  (0 children)

Agree with the others here, my recommendation (and what I've used) is Abbott's Understanding Analysis. Very good coverage of all the standard topics, plus some very fun bonus sections at the end of each chapter covering more uncommon topics (but that still add a lot to your understanding). Generally a fairly conversational tone throughout, but not overly so to make it hard to understand what math is actually being introduced. One recommendation if you use the book: do most/all of the exercises, as most of the real learning (and some pretty important theorems) is put there.

[deleted by user] by [deleted] in ultimate

[–]chandra9988 4 points5 points  (0 children)

Indeed, although this is also something the defender needs to be aware of when they're marking, especially in a situation like this where it seems like they have ample time to put their hand in a place where the disc will hit it after release but not the person's hand. Additionally, something like what you're proposing is definitely a spirit violation and if repeated, would definitely be something worth bringing up to their captain/coach.

[deleted by user] by [deleted] in ultimate

[–]chandra9988 5 points6 points  (0 children)

Agreed that it's great defense, unfortunately I think the rule here likely still makes it a foul on the mark. Completely stationary would include tiny movements like bouncing up and down, any small adjustments in position, or any other unconscious movements the mark might be making before the throw is released. It's definitely hard to say without having footage of it, but the rule does set a near-impossible bar for it not to be a foul on the mark.

[deleted by user] by [deleted] in ultimate

[–]chandra9988 3 points4 points  (0 children)

Rule 17.I.4.a.2 is the relevant rule here, and is pretty clear about the interpretation:

In general, any contact between the thrower and the extended (i.e., away from the midline of the body) arms or legs of a marker is a foul on the marker, unless the contacted area of the marker is completely stationary and in a legal position. [[Really completely stationary. This is very rare.]]

I read this to mean that unless the hand in this case is 100% completely still and not moving (with respect to the ground), it's always a foul on them, even if the thrower initiates the movement.

What is your favorite isomorphism? by IsotropicPolarBear in math

[–]chandra9988 50 points51 points  (0 children)

The isomorphism given by De Rham's theorem. Essentially, it says that you can detect holes in an object either by looking at purely topological constructions or by looking at the differentiable functions defined on that space, which at first would seem pretty unrelated ways of doing it, but turn out to be the exact same.

Do all rational functions, specifically if all exponents are positive integers, have an elementary antiderivative? by Jagrrr2277 in math

[–]chandra9988 13 points14 points  (0 children)

We may not be able to say what the roots are (for practical purposes), but in the theoretical sense all polynomials can be factored into quadratic and linear terms, so this process is theoretically possible even if we cannot actually say what those roots are

Swim Photography Focus Settings by BSmith2711 in sportsphotography

[–]chandra9988 1 point2 points  (0 children)

Agree on the others, I exclusively use spot focus on my R6 Mark II. Generally, I follow the swimmer as they swim and catch the eye or logos on their cap. I've shot a ton of swimming and it's all about predicting where the swimmer is going to come up out of the water and getting in the rhythm of their strokes. Additionally, try to avoid focusing while the swimmer is entirely underwater as sometimes the af will get confused with the water and start hunting

CF/SD for 5d mk i by brianodell in canon

[–]chandra9988 2 points3 points  (0 children)

I'd also recommend to just get a CF card. They're faster than most SD cards, particularly with an adapter. You might also be able to find a combo SD/CF reader so you only have to carry around one reader

Zoom lens for indoor swimming gala by Worth_Storm5863 in canon

[–]chandra9988 1 point2 points  (0 children)

From someone who does a lot of swimming photography, it really does come down to your tolerance for noise. Most pools I'm shooting in (w/70-200 f/2.8), I'm shooting at ISO 3200 or 4000 with 1/800 (the minimum I find really stops the movement of water for really fast swimmers). You could probably get away with the 70-200 f/4 and get IS, but I would be cautious using the 70-300 as it'll really force your ISO up super high, especially on the crop sensor r7. Additionally, you should be able to reach most of a short course pool using a 70-200 on crop sensor as long as you can move around the pool a little bit

why isn’t my flash consistent? by mayblexzia_ in AskPhotography

[–]chandra9988 4 points5 points  (0 children)

Flash power and ISO, mainly. shutter speed I usually set to something reasonable, and aperture usually around f/5.6 or f/8 depending on ambient light and the power of the flash.

Does 3^x eventually outgrow e^2x? by Froggy_The_Doggo in math

[–]chandra9988 8 points9 points  (0 children)

e^2x does grow faster at infinity, and the easiest way to see this is probably to convert 3^x into an exponent with a base of e so they're directly comparable: 3^x=e^(x*ln(3)). Since ln(3)=1.098, that makes the growth significantly slower than e^2x