Afire, I tell you. Truly afire.ozgeorge said:(sqrt(1/2(x+sqrt(x^2+y^2))) + i(sqrt(1/2(-x+sqrt(x^2+y^2)))))^2

=-(sqrt(1/2(x+sqrt(x^2+y^2))) + i(sqrt(1/2(-x+sqrt(x^2+y^2)))))^2

= x+iy

- Thread starter Ebor
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Afire, I tell you. Truly afire.ozgeorge said:(sqrt(1/2(x+sqrt(x^2+y^2))) + i(sqrt(1/2(-x+sqrt(x^2+y^2)))))^2

=-(sqrt(1/2(x+sqrt(x^2+y^2))) + i(sqrt(1/2(-x+sqrt(x^2+y^2)))))^2

= x+iy

Vertical bars should be the standard.minasoliman said:haha...and some prefer dashesSolEX01 said:1|1|11 - aren't we glad we use slashes rather than vertical bars.minasoliman said:You know what would be cool, is that the New Year's after next, we can write: 1/1/11. That would be fun to write many times.SolEX01 said:At the stroke of Midnight on New Year's Day, I write 1/1/<new year> as many times as necessary so I won't write the wrong date. Has worked fine for the last couple of years.

1/1/11 = .0909090909090909090909

1-1-11 = -11

1|1|11 = The date almost 13 months from now.

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I think it might be more customary to solve 1/1/11 as 11.Fr. George said:Vertical bars should be the standard.minasoliman said:haha...and some prefer dashesSolEX01 said:1|1|11 - aren't we glad we use slashes rather than vertical bars.minasoliman said:You know what would be cool, is that the New Year's after next, we can write: 1/1/11. That would be fun to write many times.SolEX01 said:At the stroke of Midnight on New Year's Day, I write 1/1/<new year> as many times as necessary so I won't write the wrong date. Has worked fine for the last couple of years.

1/1/11 = .0909090909090909090909

1-1-11 = -11

1|1|11 = The date almost 13 months from now.

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I'll try to upload it to bit torrent for you. ;D Then again, as of late you might want to give Ozgeorge's brain a try.HandmaidenofGod said:I need to borrow your math brain tomorrow morning for my exam. Mind sharing?GiC said:And a great indicator of poor time management skills, of which many of us are guilty.PeterTheAleut said:I guess it's too late now, unless I want to delete on of my posts, but the number of the post I submitted immediately before this was not only a palindrome, but also a unique repetition of one digit. Without the comma separator, it could even pass as a binary number.SolEX01 said:Oooh, Post #5,005, a palindrome.

11,111

;D

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I just ran into IT.

If you assume that it is one operation, instead of a series. Remember, left to right for the same operation.GiC said:I think it might be more customary to solve 1/1/11 as 11.

IT was better left alone.Papist said:I just ran into IT.

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Except with division you generally go from bottom to top and what you have is simply the text form of:Fr. George said:If you assume that it is one operation, instead of a series. Remember, left to right for the same operation.GiC said:I think it might be more customary to solve 1/1/11 as 11.

1

----

1

----

11

And hence why I prefer post-fix over in-fix notation, with:

1 1 11 / / = 11

there would be no question, or as you're interpreting the infix notation:

__

1 1 / 11 / = .09

Prefix works good to, it's great for Abstract algebra, but a bit difficult for practical use:

/(1,/(1,11)) = 11

or

__

/(/(1,1),11) = .09

I used to have an awesome math brain, and then it atrophied :'(

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I fear that by teaching only high school math I will eventually lose all of my higher math skills that I developed in college.minasoliman said:I used to have an awesome math brain, and then it atrophied :'(

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Now RPN is available as an iPhone app. Progress....

Use it or lose it!Papist said:I fear that by teaching only high school math I will eventually lose all of my higher math skills that I developed in college.minasoliman said:I used to have an awesome math brain, and then it atrophied :'(

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Ummm...you can still get HP RNP CalculatorsSolEX01 said:

Now RPN is available as an iPhone app. Progress....

The Graphing Model (HP 50g):

http://www.amazon.com/50g-Graphing-Calculator-F2229AA-ABA/dp/B000GTPRPS

The Scientific Model (HP 33s)

http://www.amazon.com/HP-33S-Scientific-Calculator-F2216A/dp/B0000DK6G9/ref=dp_cp_ob_e_title_1?ie=UTF8&qid=1259954032&sr=1-11

Unfortunately they got rid of their classical buttons, guess it didn't make the calculators look modern enough, I'm really not fond of the 33s' buttons and miss my old HP48gx with expansion card slots, which broke. But the 50g is an overall better calculator, minus the buttons.

I have an HP48gx programme for my Windows Mobile phone, no equivalent iPhone version?

On another note, I get my new Droid today!!!

I am playing on here instead of writing my term paper.

Well, you could ask questions that can help you with the term paper (sources, ideas, etc.).Alveus Lacuna said:I am playing on here instead of writing my term paper.

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Yeah, I have seen the HP 50g at local stores with SD card capability. I haven't seen the HP 33s around.GiC said:Ummm...you can still get HP RNP Calculators....SolEX01 said:

Now RPN is available as an iPhone app. Progress....

A friend in college also had the HP 48GX. I liked that calculator even though it cost $300 in the early 1990s.

Here?GiC said:I have an HP48gx programme for my Windows Mobile phone, no equivalent iPhone version?

Congratulations.GiC said:On another note, I get my new Droid today!!!

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Is it too early to start the countdown to 7,000 posts for this thread? 8)

;DSolEX01 said:Is it too early to start the countdown to 7,000 posts for this thread? 8)

Never! We've had single days where this thread has gotten over 100 posts...SolEX01 said:Is it too early to start the countdown to 7,000 posts for this thread? 8)

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So much for my posting fast. :angel: