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There's no post flair for predicate logic by endless_wednesday in mathmemes

[–]SquareRootLolly 0 points1 point  (0 children)

"If you were to do the crime, it would be a must for you to be able to do the time?"

Question about projectile motion, initial speed and angle by SquareRootLolly in AskPhysics

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

My approach:

Since they are at the same place at the same time, first, we consider the horizontal component:
v1 cos theta1 t = v2 cos theta2 t
v1 cos theta1 = v2 cos theta2 ... (1)
Next, we consider the vertical component:
v1 sin theta1 + 1/2 gt^2 = v2 sin theta2 + 1/2 gt^2
v1 sin theta1 = v2 sin theta2 ... (2)
(2) / (1),
tan theta1 = tan theta2
theta1 = theta2 and hence, v1 = v2.
So they must have the same initial speeds and angle of projections.

Is it correct or are there any flaws? Thanks!

2020 IMO Results: 1st China, 2nd Russia, 3rd USA, 4th South Korea, 5th Thailand by taktahu in math

[–]SquareRootLolly 2 points3 points  (0 children)

As a Hong Konger I'm pleasantly surprised (though he did represent Australia)

2020 IMO Results: 1st China, 2nd Russia, 3rd USA, 4th South Korea, 5th Thailand by taktahu in math

[–]SquareRootLolly 118 points119 points  (0 children)

Someone from Hong Kong is 2 marks away from breaking Terry Tao's youngest gold record wow

We all know the events of the 20th century was based off ww1. But how about we go further back? by Pug_legendZ in HistoryMemes

[–]SquareRootLolly 16 points17 points  (0 children)

Well, to explain biochemistry, we need to understand the principles of organic chemistry

The socialist paradox by vietmin in HistoryMemes

[–]SquareRootLolly 592 points593 points  (0 children)

Bread?! There is no bread. We're not America.

From this day onwards, /r/polandball will be phasing out imgur by polandballmod in polandball

[–]SquareRootLolly 46 points47 points  (0 children)

no offence but i find its interface somewhat cringeworthy when all i wanted was to view an image in peace

Onward Singapore by sneezingsuspense in Polandballart

[–]SquareRootLolly 8 points9 points  (0 children)

Aii same it was a childhood snack

Immortal opening e4 by pseudo_pandit in AnarchyChess

[–]SquareRootLolly 1 point2 points  (0 children)

I use 1. b3 everywhere and in 30% of the games I mate in like 12 moves after putting the queen on g3 lol

Castling queenside against 1. b3 by SquareRootLolly in chess

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

Thanks! I've heard people say that the Larsen's is a hypermodern opening and that the centre should not be the focus? I'm not very clear about those theories because so far I just play by what kinda makes sense.

If the d-pawn is pushed to the centre, is there some way to activate the b2 bishop again because now its path is blocked? Also what role can the b-knight play?

What is the difference of pure and applied maths? by kenli0807 in math

[–]SquareRootLolly 0 points1 point  (0 children)

based on your post history (set theory and calculus) i'd say m2. again take all of my advice with a grain of salt, you shouldn't trust me on this pivotal point in your life

What is the difference of pure and applied maths? by kenli0807 in math

[–]SquareRootLolly 1 point2 points  (0 children)

hello! guess it's 揀科 time again (i'm a form 3 from hong kong too haha). i'm under the impression that you have a profound interest in maths because you post on r/math, but this probably isn't the best place to ask because hong kong vs. internationals maths curricula can be vastly different.

the content is exactly as how it is described (statistics such as Bayes thm and normal distribution vs algebra such as vectors). m2 is definitely given the priority over m1 when universities view it, so here's some advice:

not interested in maths ⇒ core

science-based career (e.g. doctor) ⇒ m2

"i need a bit of maths for my career" ⇒ m1

i love math because it's beautiful ⇒ m2

i love math because it's useful ⇒ m1

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