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#1 Re: Dark Discussions at Cafe Infinity » Some Great Youtube Channels to visit » 2017-04-27 21:44:49

And there's also my own channel, LearnMathsFree

Hmm, I watched your channel and some of the videos there, and i see you have exactly copied Salman Khan(the creator of Khan Academy). Are those videos made by you? Hmm, they are not so bad, they are good.

though it is nowhere near as refined or as popular as the ones you mention.

Don't lose hope, I already see 480 subscribers. Keep posting and advertising your videos and it will soon be popular too.

#2 Re: Dark Discussions at Cafe Infinity » Some Great Youtube Channels to visit » 2017-04-27 20:27:54

Hmm, Vsauce is also good but I do no find it as interesting as the above ones and many of the recent videos cost money, which is out of my reach.

#3 Dark Discussions at Cafe Infinity » Some Great Youtube Channels to visit » 2017-04-27 01:36:56

iamaditya
Replies: 5

Hi everyone,

I was wondering about those youtube channels from where I learn things or visit regularly, to share in this forum. This forum has been my everything, where I could share more freely any interesting thing I find apart from facebook or whatsapp. After watching some videos on Trigonometry in Khan Academy, I wondered to share some of those channels which I have discovered after much research and I hope you like it too. So here are they:-

Physics Videos by Eugene Khutoryansky -Physics & some Maths
Khan Academy -Physics, Chemistry, Biology & Maths
caltech -Physics & some maths
tecmath -Quick shortcut tricks to solve maths
Minute Physics -Physics
Science Channel - To know interesting things
Veritasium - To know interesting things
Periodic Videos -Learn and know interesting things in Chemistry
SciShow -Learn and know interesting things in Biology
AsapSCIENCE -To Know interesting facts about humans       
MinuteEarth -To know interesting things about the earth
Technical Guruji* -Know about the latest Technology
Unbox Therapy -Know about the latest tecnology

...And there are many more. I will be sending the other channels soon.

Note-Channels marked * are available in Hindi language only.

#4 Re: Help Me ! » Distance » 2017-04-24 22:00:17

zetafunc wrote:
iamaditya wrote:

Hi,

When we represent a point on a graph we always write it as (x,y) where x is the distance fro the horizantal x-axis and y is the distance from the vertical y-axis. Here, the point (2,3) is 2 units away from x-axis and 3 units away from y-axis. Hence the distance of the pt. from y axis is 3.

You have that the wrong way round -- x represents the distance from the y-axis, and y represents the distance from the x-axis (so (2,3) is 2 units away from the y-axis, not the x-axis).


Hmm, Thnx for correcting me. I often get confused between the 2.

#5 Re: Help Me ! » Distance » 2017-04-24 21:44:47

Hi,

When we represent a point on a graph we always write it as (x,y) where x is the distance fro the horizantal x-axis and y is the distance from the vertical y-axis. Here, the point (2,3) is 2 units away from x-axis and 3 units away from y-axis. Hence the distance of the pt. from y axis is 3.

#6 Re: Dark Discussions at Cafe Infinity » crème de la crème » 2017-04-17 18:58:47

ganesh wrote:

Hi iamaditya,

Thanks for the views and comments. Regarding making it 'Sticky', MathsIsFun decides.

Cant moderators make an article a "sticky" one. Well if not then I'm sure bobbym can do it.

P.S.-Again an excellent article. Is this ur hobby,ganesh to find good information and write about it. If yes, then keep it up!

Another doubt: There is a section in MIFF named "Ganesh's Puzzles". I thought you created it, but now I think MIF did. Am I right? If yes then ask him to create anothet section.....
Where you can store these articles in various topics such as Singers, dancers, musicians, scientists and so on. Eventually you will set up another Wikipedia here!

#7 Re: This is Cool » bobbym, Are you our maths teacher at school? » 2017-04-09 02:00:38

bobbym wrote:

I am not a hero, I am just a guy that is trying to get through a day without messing up so badly. It is difficult to do even in my best fields.

hmm good, now as you saw that your bumpkin-lie is caught, so now you are not describing yourself as bumpkin anymore.

#8 Re: This is Cool » bobbym, Are you our maths teacher at school? » 2017-04-09 01:56:10

hmm, you are right bobbym. We should. Proud of you big_smile

#10 Re: This is Cool » bobbym, Are you our maths teacher at school? » 2017-04-09 01:41:27

But you just now told me that he is a fraud. Then how did you know?

#12 Re: This is Cool » bobbym, Are you our maths teacher at school? » 2017-04-09 01:34:53

Ok, don't worry, I wouldn't say anything, speak about your thoughts openly without any fear. I would not mind anything.

#13 Re: This is Cool » bobbym, Are you our maths teacher at school? » 2017-04-09 01:17:53

Why do you think Albert Einstein was a Fraud. He was one of the greatest scientist of all time(and my favourite also). And the discovery about the theory of general and special theory and theory of mass-energy equivalence(e=mc^2), was magic. He was a god on earth(according to me). You may not like physics but....plz dont call him a fraud.

#14 Re: Dark Discussions at Cafe Infinity » crème de la crème » 2017-04-09 01:10:52

Hi Ganesh,

Its an excellent article, which I discovered just after you posted the above message and it came in the top. Hi, I would suggest you to make this article "Sticky" here so that it gets locked in the top and any new member(and any old one too if they have not seen it) can come and see these interesting information.

#16 Re: This is Cool » bobbym, Are you our maths teacher at school? » 2017-04-09 00:32:08

Hmm, then I will compare myself with Albert Einstein.

#17 Re: Help Me ! » Function and limit mcq » 2017-04-09 00:30:56

bob bundy wrote:

hi Zeeshan 01

It is possible to show that all quadratics have a line of symmetry, and that for ones of the form y = ax^2 + bx + c this will be a verttical line.

If we start with the quadratic formula for the two roots:

it should be obvious that the two roots are symmetrically placed either side of the line

so the maximum will not be at

as you ask in post 31

Bob


Hmmm, but as far as I know, the max and min value of a quadratic polynomial is when the value of x is

. Check the link above.

#18 Re: Help Me ! » Please Help Algebra » 2017-04-09 00:28:19

Hi;

Shrimpy wrote:

Why is the equation of the circle different from what I got when I expanded (x – h)^2 + (y – k)^2 = r^2?

It is an equation of a circle at a point (h,k). If you want an circle at the origin [(0,0)] then h and k are both 0 and hence the equation is x^2-y^2=r^2.

#19 Re: Help Me ! » I need help with this please » 2017-04-09 00:23:58

But, the semi-circles and the circles may be of different sizes also. The size is not specifies in the question.

#21 Re: Maths Teaching Resources » Maths Books » 2017-04-07 20:06:13

Ok I'll later, when I will get some time.

#22 Re: Help Me ! » 4 steps of approximation » 2017-04-07 20:03:26

You can copy paste the code here using the math tags

math][/math]

or see this article by dross.

#23 Re: Help Me ! » Function and limit mcq » 2017-04-07 19:51:36

You can jot the value of -b/a instead of x in ax²+bx+c and can see it yourself.

#24 Re: Help Me ! » 4 steps of approximation » 2017-04-06 23:50:03

Hi Zeeshan 01,

It is a great problem for us to solve problems if you use symbols like that so Plz Zeeshan, I would recommend you to either use the Unicode characters in the normal text or Latex, in here, which is mainly meant for writing mathematical expressions.

#25 Re: Help Me ! » Function and limit mcq » 2017-04-06 23:45:05

Zeeshan 01 wrote:

Hmm, you need to find the max. and min. value of a quadratic equation. The max value of a quadratic equation is as follows:
a>0-∞
a<0--D/4a
a>1-∞
a>2-∞

What is this how you do this???

And question 1 ans is it is not a function!!!!!!



Sorry for the late reply but you may visit this site:https://brilliant.org/wiki/maximum-valu … -equation/

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