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#51 Re: Exercises » 5 problems » 2024-05-08 23:31:08

I think for Q3 you use Brahmagupta's formula

#52 Re: Exercises » 5 problems » 2024-05-08 23:00:39

Oh I forgot the sides are integers.

#54 Re: Exercises » 5 problems » 2024-05-08 21:27:26

For Q4, is it the area minus (5 times the perimeter),

As in A - 5P = 2023

Or is it (the area minus 5) times the perimeter,

As in (A - 5) * P = 2023

I'm guessing it's the first one??

#55 Re: Help Me ! » Two Different Reasons. » 2024-05-07 01:05:55

Hey Bob,

Makes sense. I thought of a question. Is the only reason mathematicians do not say 0/0=17 is true and 0/0=-4.5 is true and 0/0=phi is true; is that reason because we could then derive 17=-4.5=phi from it?

So basically indeterminacy is jargon for it could be this or that but this and that aren't the same, therefore we're not going to assign a value to it. Except in the right context.

#56 Re: Help Me ! » Two Different Reasons. » 2024-05-07 00:41:11

I would try to explain A. by saying it looks like on any standard view of division there is no basis for privileging any answer to 0/0 over any other answer. It's indeterminate because it could be anything.

I would be starting to get a bit out of my depth though.

K_R

#57 Re: Help Me ! » Two Different Reasons. » 2024-05-07 00:25:38

I picked up somewhere that the result of a division represents how many times you need to subtract the divisor from the dividend to get zero. So 15/5 = 3 because 15-5-5-5 three times = 0.

This suggests a/0 is unanswerable because it's a meaningless question, because you'll never get a to 0 by subtracting 0 from it.

Similarly with 0/0, this time you'll get 0 for ANY number of subtractions, so again there's no meaningful answer.

Maybe there are other explanations and applications of assigning answers to them but that's how I wrap my head around it.

K_R

#58 Re: Introductions » Old Faces, New Outlook. » 2024-05-06 13:57:39

Hi zetafunc! I remember your wizardry and that you do videos. You are really passionate.

Hi Bob,

Good to see you.

I would use my old account. But the email has to be email removed


If it's email removed I don't know how to access it due to some business about needing an old phone number for verification.

Thanks either way,

K_R

#60 Introductions » Old Faces, New Outlook. » 2024-05-05 22:57:51

Keep_Relentless
Replies: 7

Hi everyone!

I was on this forum years ago as "Relentless." I was in high school at the time. I'm happy to see the forum is alive and well; you all were very engaging. I did a lot of problems here on Excel as I didn't know how to code... lol. I did some maths and computer science at uni but switched to philosophy and religion. Let's just say I am itching for a realm of certainties and not just possibilities, so I want to return to computational maths. I think it would be more useful to society too, frankly. We'll see if these rusty old gears can turn again!

Oh, and I'm sorry to hear about bobbym's passing. He was a one of a kind.

K_R

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