# OverLordGoldDragon's Messageboard...

s

... but don't expect a timely reply.

:)

Note by John M.
6 years, 9 months ago

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

• Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
• Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
• Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in $$ ... $$ or $ ... $ to ensure proper formatting.
2 \times 3 $2 \times 3$
2^{34} $2^{34}$
a_{i-1} $a_{i-1}$
\frac{2}{3} $\frac{2}{3}$
\sqrt{2} $\sqrt{2}$
\sum_{i=1}^3 $\sum_{i=1}^3$
\sin \theta $\sin \theta$
\boxed{123} $\boxed{123}$

Sort by:

- 6 years, 5 months ago

- 6 years, 5 months ago

- 6 years, 5 months ago

How haveyou been?

- 6 years, 5 months ago

I could really use many people building many very big and tall buildings around many corners of the earth - if y'know what I'm sayin'.

- 6 years, 5 months ago

Why do you need to build tall buildings?

- 6 years, 5 months ago

Another way of saying I wish there was more time in a day - by building tall buildings, you are increasing the Earth's angular momentum and thus slowing the rotation of the Earth - thus adding more time required for the Earth to make one revolution (a day). Clever, eh? :)

- 6 years, 5 months ago

You should play sherlock holmes instead of benedict cumberbatch.

What are you doing these days? Less brilliant, much AP?

- 6 years, 5 months ago

More like brilliant AP ;)

Laters, M.Phillic.

- 6 years, 5 months ago

Please teach me what lim x tends to 0 f(x) means in your own way. Thank You

- 6 years, 9 months ago

s

There ya go.

- 6 years, 8 months ago

Sarcasm?

- 6 years, 8 months ago

Nope - just a summary of the issue.

Sorry - but I'll probably not sleep till tomorrow when I'll make the pre-final post; I still have posts due for Mr. Mendrin and Mr. Haussman.

Unfortunately you just might have to wait for this by the end of this school year.

Sorry, and thank you for everything, Agnishom. You've been a great helper, contributor, motivator, and a friend.

Farewell!

s

- 6 years, 8 months ago

Will miss you... :'(

- 6 years, 8 months ago

Hi, it's been long. How you doing?

- 6 years, 8 months ago

- 6 years, 8 months ago

11 books! they are enough to make anyone crazy frnd :)

Drinking coffee to keep u awake so that u could study? O.o

:D

Cheer up frnd. If u don't, who will??

Is everything , like, OK?Too much pressure of studies, or something?

- 6 years, 8 months ago

NO COFFEE! I'm all natural. Though sometimes I should rethink that... waking up with my laptop on me in 4AM.

Well yea it's alright. Though it's so much now I see homework solutions inside my head xD

Hope you're doing well, Math Philic.

Cheers!

- 6 years, 8 months ago

:v "homework sol...." , it's good your subconscious is registering concepts and solution ;) would be grt help while recalling them xD

yup, I m good.

'm preparing for college entrance tests... and I m hating chemistry like anything :p

And sometimes hating the whole preparation -_-

- 6 years, 8 months ago

Hello my Physicist Friend :D

- 6 years, 7 months ago

Whattup meh leh phillimathman

- 6 years, 7 months ago

wooohhh wrath of the lich king.

Is he saying hello or something?

'm gud. lazy but yet gud ;)

what about do you have any social network contact..or you good to chat here itself?

By the way ...wanted to share wid you a chapter like that in combinatorics, I have found some Physics stuff.Just thought if you would want to have a look at it.

- 6 years, 7 months ago

Well I'm always open to anything new. As far as physics is concerned, I've got two excellent books, one math based and one concept-based right above. So if it costs no trouble to you, sure, I'll take a look.

Exams? Got 100% on AP Statistics Midterm, failed the class by .57%.

The rest, NOOOOOPE. COMING UP. TIME TO DIE.

Social Network. Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm......................................................... yeah. Dude there's one really cool website where I sometimes hang out, it's called Brilliant.org. You should check it out some day, but make sure you wear a headset just in case your head explodes - don't wanna spread teh debris

- 6 years, 7 months ago

Why would head explode O_o ?

- 6 years, 7 months ago

Well, that was violent O_o...

Puns n' jokes. This one came out stupid. Infinite dimensions stink; I still work on them.

Gotta slide. Cya!

- 6 years, 7 months ago

Na. It's Ok.

You were the first on to reply to my note when I first came to Brilliant.The best part was that you were friendly instead of formal. That's is something rare.I respect that attitude.

It's Ok pal. A joke. Not violent.

Cheers!!! :v

- 6 years, 7 months ago

Merry Christmas John :)

- 6 years, 7 months ago

- 6 years, 7 months ago

Finally learnt to post pics ;)

- 6 years, 7 months ago

happy

if I could say it in quantum language, :p

mini

enjoy!!

- 6 years, 7 months ago

hell yeah despicable me! You know how to roll, Math Philic.

Have a mathful and happy new year!

- 6 years, 7 months ago

- 6 years, 6 months ago

:)

- 6 years, 6 months ago

I want to continue your 'noobs weekly release'. May I ?

I have had my name changed from 'Math Philic' to 'Soumo Mukherjee'. This is my real name. :)

- 6 years, 3 months ago

Yes, I've taken notice. A great name, especially the first name - Soumo. I've always wondered :)

- 6 years, 3 months ago

Thanks ^_^

The point was to have 'noobs weekely' going on. It shall be best if it comes from you than me. I thought you might be too busy with APs, that's why I asked.

Lol, I just came to check in your reply, after studying Physics for one and a half hour. I thought much better would be to check tomorrow morning. Don't know why I checked now.

PS: Meaning of Soumo, However it is written as 'Soumya'(sounds girlish for a boy), in Bengali it is pronounced as 'Soumo'.

- 6 years, 3 months ago

Balanced, beautiful, majestic, dignified, good-looking - sounds accurate.

- 6 years, 3 months ago

Does God exist?

- 6 years, 9 months ago

Depends.

- 6 years, 9 months ago

- 6 years, 9 months ago

- 6 years, 9 months ago

In 10th standard I used to go to a workshop conducted by Dr.Vishal Joshi (a researcher at Physical research laboratory, Ahmedabad ) at GNFC Science center .Our whole class used to go . My friend asked the same question, Does God exists. He explained that ( I don't remember his exact words , but just what I remember I am writing here) nowadays people are treating God as a bowl, whatever they want they take it (eg . money etc) and whatever they don't want they just pour it into the bowl. Then he started from history, when Aristotle or some other physicist claimed that the saying of church were wrong, he was jailed. for many centuries people believed in his laws. His laws contain that it was natural for a body to come at rest ( he just made laws which generally we observed , his ideas were not logical.) Before Galileo , it was a common notion that " An external force is needed to keep a body in uniform motion."

Galileo statement - No external force is needed for a moving body for a moving body to keep its motion as it is."

This statement paved a new path for science. People started enjoying in knowing new things . Thus many started not believing in the sayings of church, this situation is followed till now.

@Satvik Golechha in detail you can go to Arvindguptatoys.com site and in the Isaac Asimov's books section (Physics) you can refer this book UNDERSTANDING PHYSICS – Part 1 MOTION, SOUND & HEAT Isaac Asimov

- 6 years, 9 months ago

How confusing! The comment starts with God, ends with Assimov

- 6 years, 9 months ago

I answer to satvik's question "Does god exists" , can't be answered . so I just retraced how people treated things time to time , their beliefs. Who knows that the first person on this planet just wanted to stop his baby from crying , said god will come .

- 6 years, 9 months ago

Do you like carrots?

- 6 years, 9 months ago

I like baby carrots - make a good snack and are a good source of vitamins.

s

- 6 years, 9 months ago

Why this kind of question?

- 6 years, 9 months ago

Note:

Please ask me anything before November 4th. Afterwards I doubt I'll be using this site much - or, at all (the layout updates are just too much). I'll make a one final post at November 4th, and then will take a long vacation - and maybe come back sometime.

Cheers,

- 6 years, 9 months ago

Hmm... Why are you going away?

- 6 years, 9 months ago

7 AP classes and this website isn't as good as it used to be.

I may check in occasionally just to finish some old debates or check on friends, but I won't be using this website anymore.

- 6 years, 9 months ago

What are AP classes?

Come on, there are still a lot of good problems.

- 6 years, 9 months ago

Advanced Placement - college level courses. And there are AP Exams - of which I am taking 10 at the end of the year. AP Exams give you college credit (if you score 4 or 5 (max) - but some colleges may take a 3) in the United States so that you can exempt yourself from those courses in college. They are considered the highest high-school level courses and require the most rigor. Here's the list of courses I'm taking:

AP Government and Politics

AP Environmental Science

AP Biology

AP Literature and Composition

AP Statistics

AP Physics C

Multivariable Calculus

Differential Equations (after MVC)

-Note that the last two aren't AP, but I call them AP because workwise they're the same. And for Stats and Physics I have VHS (virtual highschool) courses - which is why I took their pics off Google.

I hope this clears up the AP question. And as for Brilliant - the insane problems on this site aren't what I liked - I liked its layout and its pleasantness of appearance to the eyes when I browsed through problems and solutions - now it's just a mudpit of information and just looks ugly to me.

The updates on this website are more unpredictable than the Stock Market.

Cheers,

- 6 years, 9 months ago

Best of luck for your journey.

You really won't be getting much time... you know preparing for exams and all.

But, don't abandon the site.... after exams, if you may, post some strangest Physics problems and discussions.... :)

Best of luck for exams!

- 6 years, 8 months ago

@Calvin Lin @Suyeon Khim you must look into this...

- 6 years, 9 months ago

Isn't Ap over? :p

Next time I will upload full solution ;)

i

- 6 years, 6 months ago

Hm? What happened to your old solution? Did you remove it? I can't find it.

What's the big deal, man. It's not the end of the world. Do something else - there's more to life than math and physics.

- 6 years, 6 months ago

It was incomplete. I did not know why other options are not correct, so I deleted it.

Why you say so? 'Do somethin else'-like have a profession :D ? Yes, there is life beyond it. What makes you think my life is restricted to Maths & Physics?

- 6 years, 6 months ago

Nvm I was drunk

Sorry if it sounded wrong. Yes you can post the complete solution if you'd like, and have fun at it!

- 6 years, 6 months ago

Ok, I know there is this thing: That some American think we are good in maths, and nerds, and noOb ;)

I don't know from where it comes, but yes my friends told me this, that they read it in some forum or something and also showed it to me. Guess what, some undergraduates, in UK and US, wrote all those stuffs. We were laughing at it :D . Then we searched what others think. We found that only Russians and Japanese like us. Lol... . Look sometimes there can be a communication gap between us, because english is a language we learn, it's not our mother tongue. That's why I edit my stuffs a number of times even after posting them.

So you brought the loop holes in my reasoning. I couldn't defend it. Sometimes I don't back up my approaches. That is a very bad habit I have got. Next time I really want you to surface any loopholes in my reasoning so that I will learn something that way. Because only after that discussion did I realized something that I might haven't if it was accepted blindly. Someone else could have pointed the loopholes. So, now lets prepare for the next Brilliant problem then, my friend. And

~Cheers my Brilliant friend~ (^_^)

And if you want to know what India is really like go Here. Read some selected posts. Every demerit and every merit is more true about us in this blog. Also, if you want, share it with your friends in America. They will get the true picture. ;)

Okay, I saw a comment on your problem. If you get some time from AP, go through Chapter 14: Periodic Motions; read section 14.1, 14.2 and 14.5 from Fundamental of Physics-Halliday-Resnick. I couldn't find any contents from the topic Gravitation in Google books. I searched for Fundamental Of Physics extended edition, but Google books didn't allow me to view the chapter on Gravitation. But I was able to skim through chapter 14. So you can go through that chapter too. But if its placed before Periodic motion then it wouldn't contain the concept that I was talking about. Also read from other reference about Simple Harmonic Motion. Get an general outline don't dig much deeper. I think you like studying through videos so here you go: video1, video2, video3, and a bit advanced. All videos are almost same. Take your time, watch them when you are free. Nvm if the videos are boring or irritating. Loll...

It's 4:00 A.M. Time to sleep.

Have a good day.

- 6 years, 6 months ago

Well fine, if you want me to be honest, I'll get right down to it.

First thing's first: No, I did not paint the American-stereotypical nerd's picture of you in my head. That manifestation of ignorance disgusts me, and I avoid those who unitize it. However, there are some truths to the concept. I'm not going to spread the philosophy of nerdism, but the bottom line is the lack of inter-specific social skills (meaning, having competence in communications with people regardless of their nationalities). This means not that it's their FAULT. No. But it's simply a fact that people can twist to often construct false ideologies about others.

As far as for my first comment, that's not what I meant. What I meant was, if you really want to know, that I see you spend, what a working person would consider "too much time" on too useless of things. Face it - math is inapplicable to most of our lives. But that aside. Basically, I can see you invest lots of efforts into things that may not give back in life as much as some of the other things you could be doing instead. I won't get down to specifics, even though I should, but I'll leave this to you. Or, rather, let's briefly consider your case about writing the solution to my problem:

Why would you do that?

What is that going to give you?

How can that positively influence your, or maybe someone else's life?

What is the purpose of you investing 20mins+ into writing a solution to my problem?:

It it to educate society? There are books, online resources, teachers, wikis, and none-the-least, my solution for that.

It it to improve your very skill of writing solutions and communicating your ideas to audiences? Okay, better, but this is a very inefficient way to do it. A book or another educational source would do the job much faster and better.

Is it for entertainment? Well, then no comment there. If you've got the time, go for it :) Life's not all about productivity.

What could you be doing INSTEAD with 20 minutes of the free time?

Probably something better than this. But of course, maybe not - maybe Brilliant is the best, or one of the best, activities for you.

And this goes out to not only this but all the other activities I observe you pursue on this website. I mean, in retrospect for about one week, is interacting with peers on Brilliant.org the best of you?

Maybe. I don't know. Just a food for thought.

Now if you were in your retirement age, I would have no comments. But assuming your Brilliant age indicator is correct, there's a lot that a 21 year old person can do other than get bogged down into trying to help other people and get help from other people in tasks pertaining to abstract intellectual ideas.

If that makes you happy, and if you feel that your social life and economic condition allows you such a leisure, go ahead! But if you're middle-class or lower, I would suggest for you to... not abandon math, but to reconsider your time management throughout the average day by finding a criteria for evaluating things for usefulness.

You can consider this, trash it, or do both - at the end of the day, your choices have a long-term influence on your own life.

Live on.

- 6 years, 6 months ago

okay, got it. :)

I am not going to spend much time on Brilliant.

Will make a fixed time, when to use Brilliant.

I just have more two months, then I am gone, for atleast 4 to 5 years. I don't even know I would be using Internet much then.

I am improving in Brilliant. That's motivating. Could solve some higher levels now. It helps to know things from others, that would be hard to get.

Peoples spend hours in sites like facebook and twitter, Brilliant is ofcourse much better, get to learn something.

I have decided to make Math my profession. so you can imagine the rest. :D

You think too much friend and take life too seriously.

Cheer, time to go. Only cam to see yar reply :)

- 6 years, 6 months ago

That's the spirit.

I will be waiting to hear your accomplishments 4-5 years from now. Make them $\Huge{\text{HUGE!!!}}$

Good luck bud!

- 6 years, 6 months ago

l

Yup... thanks.

I came from nothing to something. Never was good at maths, never thought one day it will make such an impact on me.

One day, may be I will tell you, why I spend much time on Brilliant interacting with people. But someday. its a long story. Story of failure :p

U online ?

- 6 years, 6 months ago

"U online?"

I'll be around if you need anything. But if you imply "online" as in ready for chatting and time lapsing, NOPE.

*goes offline*

- 6 years, 6 months ago

did you see the videos?

- 6 years, 6 months ago

- 6 years, 6 months ago

okay ... going...

- 6 years, 6 months ago

Did you get time to go through the chapter?

Did you watch the videos?

Very soon someone is going to try to shoot your solution. Until now, he has been busy in his argument only. But it won't be very long till he realizes that the energy change of a projectile is also same as you wrote in your solution. And projectile motion is in no way similar to that of a pendulum.

Be prepared. 'cuz the Last thing I want to see is @John Muradeli losing argument with someone else. ;)

- 6 years, 6 months ago

Yeah that is not going to happen...

I need more sand. I'll be getting more two weeks from now. I shall tend to it then.

Cheers

- 6 years, 6 months ago

- 6 years, 6 months ago

Why are you leaving?

Did you take oath that you won't use it?

You shouldn't have gone to San Fransisco

- 6 years, 6 months ago

Look MP, I'm sorry if my absence is causing you problems but I've simply realized that this website is a complete waste of time for me and is hindering my productivity as an individual. There are much more important things to life than an endless endeavor for acquisition of useless mathematical knowledge that has no relevance to my life. Hence I have decided I will discontinue my activities on Brilliant for 6 months, or, like I said, permanently. And I do suggest you do the same if you aim big, but of course that is not my decision, it is yours, and you make judgments accordingly.

- 6 years, 6 months ago

Okay, what about setting limit on usage...you can come here once a week, and during the week you can accumulate doubts and problems and topic for discussions.

- 6 years, 6 months ago

I need you here

- 6 years, 5 months ago

Will you participate ?

- 6 years, 4 months ago

even if it's corny, why not :D

- 6 years, 4 months ago