Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Ganesh's Puzzles » General Quiz » 2018-10-08 05:20:52

Wow! Never clicked on this thread to see what is here. I am really a GK enthusiast and I love each and every general knowledge question I come across.

I had also written an answer on Quora about some amazing GK facts. Here's it https://www.quora.com/What-are-some-goo … kherjee-75

#2 Re: Introductions » Introduction » 2018-10-08 05:05:34

bob bundy wrote:

hi iamaditya

No Spam. Spam includes messages that have no relevance to the topic, that are annoying, repetitious or promotional in nature.

I remove adverts because they are (1) sometimes pornographic; (2) they 'clog' up the site with irrelevant rubbish; and (3) it's not fair to the paying sponsors to allow free advertising. If they stop supporting us the forum's very existence  is at risk.

Mostly, these posters join the forum; create one or more posts which contain an advert, either in the post or the signature, then we never hear from them again.

Just once, we had a genuine mathematician who posted a link to the sale of his maths book.  Bobbym had a word with him, and he removed the advert and replaced it with a link to a free download of the book.  That seemed like a good compromise.

Bob

Oh!

I wonder where did bobbym get the free download of the book? Nothing is available for free these days.

#3 Re: Introductions » Introduction » 2018-10-06 22:44:43

Hi Leesajohnson,

Welcome to the forum.


bob bundy wrote:

hi Leesa

Welcome to the forum.

I have removed the advert from your signature.  Please read this:

http://www.mathisfunforum.com/misc.php?action=rules

Bob

It is not mentioned anywhere in the rules not to post an advert.

ganesh wrote:

Hi Eva Wilson,

Welcome to the forum!

Who is Eva Wilson?

#4 Re: Dark Discussions at Cafe Infinity » Some Great Youtube Channels to visit » 2018-03-27 22:56:12

Some more to consider...

Vsauce2- Amazing Videos on Science
Vsauce3- Amazing Videos on Science
Guinness World Records- Official Channel for the Guinness World Records
BRIGHT SIDE- Tips on everything in day to day life.
Interesting Facts- As the name suggests
#Mind Warehouse- Blows your mind
Dude Perfect- 5 Sporty boys do it all
list25- Usually the top 25s...
Seeker- For all the curious people out there...
SeekerVR- To experience the videos sitting at your home...
Today I Found Out- As the name suggests..

More coming up soon. Stay tuned up in this post and don't forget to like (Not applicable tongue), share and subscribe smile ...

#5 Re: Dark Discussions at Cafe Infinity » Some Great Youtube Channels to visit » 2018-03-20 23:18:23

Here are some more...

ashish chanchlani vines*- Amazing Comedy in Hindi
Sandeep Maheshwari*- Motivational talks
TED Network(TED, TED-Ed, TEDx talks, TEDxYouth, TED fellows, TEDenEspanol, TED Institute, TED Prize Channel)- Amazing talks, education and facts.
BBC Network( You will find the list of channels here)- As each of its name suggests.
Nat Geo network (You will find all the channels here)- As the name suugests
5-minute crafts- Life Hacks
EverythingApplePro- All you want to know about Apple
Apple- Apple's official youtube channel
Google- Google's official youtube channel
3Blue1Brown- Math Facts with nice animations
Numphile- Interesting Math facts
PBS Space Time- Amazing channel for everything you need to know about space.

...And there are many more which I will post later

Disclaimer:- I am in not any form advertising the channel or its company, these are purely suggestions based on my preferences which may vary from individuals to individuals.

#6 Re: Science HQ » quantum nos. » 2018-03-16 19:48:06

Monox D. I-Fly wrote:
iamaditya wrote:
Monox D. I-Fly wrote:

How can they be contradictory?

That is becoz people (in India at least and most parts of the world), tend to take up either Engineering or Medical and these requires 3 different subjects. Eng requires PCM while med requires PCB. There are only a few who take up both these fields so they happen to be contradictory in that case...

What are PCM and PCB? Are those "PC" referring to the same thing?

"P" here means Physics, "C" means Chemistry, "B" means Biology and "M" means maths. I hope you ca figure it out now.

#7 Re: Introductions » good day » 2018-03-11 19:21:38

Monox D. I-Fly wrote:
justlookingforthemoment wrote:

Make_Me_Yours94, this is a forum, not a chat room, so people post messages and then wait for a reply. You also can't send private messages. Happy posting.

Wow, I have been a member for 2 years here, yet I never knew that members can't private message each other.

Yeah, it is a feature which is available only to moderators and administrators, which I dislike very much about this forum sad

#8 Re: Help Me ! » [ASK] About Vector and Angle » 2018-03-11 19:17:15

Given w = |v|∙ u + |u| ∙ v. If θ = ∠(u ∙ w) dan φ = ∠(v ∙ w) then ….

What is dan...? Never heard of that function...

#9 Re: Science HQ » quantum nos. » 2018-03-11 19:01:12

Monox D. I-Fly wrote:
niharika_kumar wrote:

bio and maths are contradictory.
There are only a few people who are interested in both these subjects.
That is what I meant smile

How can they be contradictory?

That is becoz people (in India at least and most parts of the world), tend to take up either Engineering or Medical and these requires 3 different subjects. Eng requires PCM while med requires PCB. There are only a few who take up both these fields so they happen to be contradictory in that case...

#10 Re: Help Me ! » Row echelon » 2018-02-26 21:04:26

Are you talking about solving a system of linear equations or just a single linear equation. If latter is the case then you can go here to learn more:http://www.mathsisfun.com/algebra/index.html. If former case, then you can use cramer's rule to solve it. For more info, visit here:https://en.wikipedia.org/wiki/Cramer%27s_rule

#11 Re: Help Me ! » effect of x changes in linear function » 2018-02-26 20:49:12

You can use Desmos Graphing Calculator to learn about it, the best graphing calculator as far as I know. It contains a lots and lots of features, to help you learn graphs.

#12 Re: Science HQ » electrostatics... » 2018-02-26 20:44:47

Hi George, Y.

Were you there all the time? Why did you not post anything...

#13 Re: Introductions » schools in magarpatta city pune » 2018-02-26 20:42:45

Oh I live in Pune, but I study in Indira National School.

[P.S. Visiting the forum after about 2 months..]

#14 Re: Jokes » What's the most annoying song in the world? » 2018-01-21 22:29:32

Hmm, according to me, this song is the most annoying song ever. How the hell did it get 32 Million views???

The song is Selfie maine leli aaj (I took a selfie today) by Dhinchak Pooja.

#15 Re: Puzzles and Games » A little nice puzzle » 2018-01-16 07:29:11

ganesh wrote:

I asked this problem long time back when I was young.

Oh really? Actually I heard this problem from my friend.

#16 Puzzles and Games » A little nice puzzle » 2018-01-15 23:00:15

iamaditya
Replies: 2

You are given 8 balls. One of the balls is heavier than the rest which are all the same weight. It is impossible to determine the heavier ball by the shape, size or lifting it up. You are given a 2-plated beam balance. Using the balance twice, how can you determine which ball is heavier.

#17 Maths Is Fun - Suggestions and Comments » Banning new members » 2018-01-10 00:33:17

iamaditya
Replies: 3

Why are so many advertisers joining the forum nowadays and getting banned due to advertising there own math websites?

#18 Re: Help Me ! » Geometry Homework Help » 2018-01-10 00:30:27

bob bundy wrote:

There is a way.  Don't want to advertise it (no pun intended smile )

Please can we let this thread fade away so it doesn't give anything away.  Thanks.

B

A better option is to close this topic.

Administrators and moderators have access to additional information about each member

Do they include e-mail address also?

#19 Re: Help Me ! » Finding an equation by fixed-point method » 2018-01-04 23:04:56

Hannibal lecter wrote:

Hi, how to find the root of the following function by fixed point iteration method ?

-exp(1/(3*exp(t)))/(3*exp(t))

AFAIT, its this function:

#20 Re: Help Me ! » what is the solution for f(x) = exp(-x) ? » 2018-01-04 23:00:18

zetafunc wrote:

Where did you get 0.571143115080177 from?

See the graph which Ganesh posted. You will see that it converges down to X-axis and almost touches it at that value.

#22 Re: Introductions » All Hail the Super Member!!! » 2017-11-29 22:58:31

You are in this forum for almost 8.5 yrs!

#25 Re: Help Me ! » Geometry help » 2017-10-30 03:24:19

Hi alter ego,

You need to post a diagram for this as well as the other thread. I think you missed it.

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