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**veeceeone****Member**- Registered: 2019-10-29
- Posts: 8

I am retired. I see the site and the forum as a place to relax and improve myself. My education is in engineering.

Unfortunately, I completed my various courses without really understanding large parts of the subjects I studied. Now that I have time, I flit from subject to subject, this time really trying to understand. At this time, I have no hesitation declaring that the emperor has no clothes [ even if I happen to be the one who is the emperor :-) ]

Here is what I wrote about Math Is Fun yesterday on a Facebook group. The first line in Tamil is for Ganesh :-)

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யான் பெற்ற இன்பம் பெறுக இவ்வையகம்.

I stumbled into this site while doing a search (for infinite series). This site seems to be exceptionally well done. (This seems like an understatement, really.)

https://www.mathsisfun.com/

This proof blew me away:

First, we will call the whole sum "S": S = 1/2 + 1/4 + 1/8 + 1/16 + ...

Next, divide S by 2:S/2 = 1/4 + 1/8 + 1/16 + 1/32 + ...

Now subtract S/2 from S

All the terms from 1/4 onwards cancel out.

And we get:S − S/2 = 1/2

Simplify: S/2 = 1/2

And so:S = 1

You can start at whatever level your are in and have some fun.

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I certainly hope to have fun here.

VC1

PS: I did have a bit of a problem registering.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 31,652

Hi veeceeone,

**Welcome the the forum!**

The first line in Tamil is for Ganesh :-)

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யான் பெற்ற இன்பம் பெறுக இவ்வையகம்.

Thanks!

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**veeceeone****Member**- Registered: 2019-10-29
- Posts: 8

ganesh wrote:

Hi veeceeone,

Welcome the the forum!The first line in Tamil is for Ganesh :-)

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யான் பெற்ற இன்பம் பெறுக இவ்வையகம்.Thanks!

The Tamil quote may be roughly translated as:

"Let the whole world enjoy the joy I was fortunate to receive."

I wanted other folks in a certain Tamil speaking Facebook group also to enjoy Math Is Fun that I discovered and that's why I started my post there with this Tamil line.

I have some questions on the last few terms in an infinite series. The question is very low priority for me. I won't die if I don't know the answer but would love to. Where (i..e, which group here) can I ask this?

Thanks.

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**Bob****Administrator**- Registered: 2010-06-20
- Posts: 8,913

hi veeceeone

Welcome to the forum. Thanks for the kind words about the site.

It seems like you are asking for help so post your question in the Help Me section. Click the Index tab.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

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**veeceeone****Member**- Registered: 2019-10-29
- Posts: 8

I will post my questions in the Help me section. Thanks.

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