FabSwingers.com forum: Anyone here good at maths?

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

I mean like, really good. Like, might even be a mathematician by profession? Or a physicist/physics teacher?

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Nope but I am curious (nosey) to know why you are asking.....

Reply privately

Reply in forum

Reply +quote

By *luebell888Woman
over a year ago

Glasgowish

I can add, subtract, multiply, divide and do basic fractions. To me the other stuff they tried to teach me at school was pointless. As long as I can manage my finances then I am happy.

Reply privately

Reply in forum

Reply +quote

By *ynecplCouple
over a year ago

Newcastle upon Tyne

Pretty good at maths I can make the numbers work for me, good thing really it is part of my job

Reply privately

Reply in forum

Reply +quote

By *andy_tomMan
over a year ago

wolverhampton

I can count to 2 if that helps.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I’d like to think my maths is pretty decent (not to any official great educational qualification standard!)

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Depends what you mean by maths. Terrible at doing easy sums and I count on my fingers .... Yet have enough letters after my name to say I'm a whizz!

Reply privately

Reply in forum

Reply +quote

By *mily36CWoman
over a year ago

Bedford... (or anywhere beginning with B..!?)

Nop, only When insomnia has kicked in in the middle of the night and start calculating exactly how much sleep I could still get if fell back to sleep straightaway!?

...so catch me then!

Reply privately

Reply in forum

Reply +quote

By *ean counterMan
over a year ago

Northants

I managed to get a high grade O level in maths as I really enjoy it (weird I know) but this has come in handy considering my job now

Also comes in handy when Im counting sheep in my head when I cant sleep at night

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

The only number you need is 69 or possibly a 68 where you owe them 1

Reply privately

Reply in forum

Reply +quote

By *hunky GentMan
over a year ago

Stamford

I'm pretty good at doing arithmetic in my head, but I'd need a refresher course to do some things i did at school.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I dont have to drop my trousers to count to 21

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

We both work with numbers in different fields in finance.

I'd say my maths skills are pretty decent, but seriously some of the stuff my nearly teenage daughter brings home from school makes my brain hurt

Reply privately

Reply in forum

Reply +quote

By *isspurplechesterWoman
over a year ago

Chester

If being able to cut a cake into perfectly even slices qualifies as maths, then I’m a mathematical whizz! Other than that I’m absolutely shocking haha

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I spent school throwing the teachers books out the window. Maths are definitely not for me

Reply privately

Reply in forum

Reply +quote

By *hunky GentMan
over a year ago

Stamford

1+1= fun

2+1= ohhhhh yes.

Reply privately

Reply in forum

Reply +quote

By *melia DominaTV/TS
over a year ago

Edinburgh (She/Her)

Was.. not so much now... as they say if you don't use it you loose it..

Electrical and electronic engineering degrees are pretty much maths based throughout..

Reply privately

Reply in forum

Reply +quote

By *annaBeStrongMan
over a year ago

"Was.. not so much now... as they say if you don't use it you loose it..

Electrical and electronic engineering degrees are pretty much maths based throughout..

It’s mad ain’t it. What I had to do tis get qualified vs what I actually use in job.

I was a master at using trig to work out power factors on motors at one point. Not so much anymore

Reply privately

Reply in forum

Reply +quote

By *ty31Man
over a year ago

NW London

"Was.. not so much now... as they say if you don't use it you loose it..

Electrical and electronic engineering degrees are pretty much maths based throughout..

It’s mad ain’t it. What I had to do tis get qualified vs what I actually use in job.

I was a master at using trig to work out power factors on motors at one point. Not so much anymore "

Same. Had to learn loads of complex maths (imaginary numbers, integration, differentiation etc) when I studied engineering. Now I've gotten so rusty with all of it through lack of use!

Reply privately

Reply in forum

Reply +quote

By *mily36CWoman
over a year ago

Bedford... (or anywhere beginning with B..!?)

"I managed to get a high grade O level in maths as I really enjoy it (weird I know) but this has come in handy considering my job now

Also comes in handy when Im counting sheep in my head when I cant sleep at night

Can I borrow some of those sheep?!

Reply privately

Reply in forum

Reply +quote

By *rhugesMan
over a year ago

Cardiff

My friend has a PHD in mathematics

if that helps

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Can anyone solve

4cos x = 3tan x

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I have a calculator if that helps

Reply privately

Reply in forum

Reply +quote

By *atnip make me purrWoman
over a year ago

Reading

I did it to university level.

Reply privately

Reply in forum

Reply +quote

By *ranny-CrumpetWoman
over a year ago

Crumpet Castle

Yes. Ask me anything......... I'm waiting to solve.....

Reply privately

Reply in forum

Reply +quote

By *ranny-CrumpetWoman
over a year ago

Crumpet Castle

I'm mathsy enough to know that 3 minutes have passed since I offered my services......... pah!

I have things to do in this time continuum ..... I must awayyyyyy Hi Hooooooooo silverrrrrrrrrrrrrrrr....... up up and awayyyyyyy

Sorry i've been back to backing The Tick ....... I have the hots for Peter Seranefowicz ..... ( it's okay to spell it wrong - he doesn't come here )

Reply privately

Reply in forum

Reply +quote

By *yron69Man
over a year ago

Fareham

Most maths we use was well known by the 15th century. Fact.

Reply privately

Reply in forum

Reply +quote

By *eoeclipseWoman
over a year ago

glasgow

"Can anyone solve

4cos x = 3tan x

That would be 0, unless you meant

Cos being 4° & tan being 3°

If it's the latter then I think it's -1.973516871

Reply privately

Reply in forum

Reply +quote

By *ady LickWoman
over a year ago

Northampton Somewhere

I thought I was until I looked at my daughter's homework when she was in year 6! Now she's gcse and my son is second year A level maths I haven't got the foggiest!

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

[Removed by poster at 09/09/21 12:01:53]

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

If I told you, you would be too turned on to do anything for the rest of the day. So it would be irresponsible of me to tel

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"My friend has a PHD in mathematics

if that helps"

That would be be very helpful if...

Reply privately

Reply in forum

Reply +quote

By *ig_eric_tionMan
over a year ago

IPSWICH

My mental arithmetic is pretty good. It has to be.

I wouldn't know how to do calculus and quadratic equations now though.

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"I did it to university level. "

Oh cool! That would probably be the level required. I think, I'm not sure.

It's a question about proving a proposition about 3D space. Like, determining rules for how objects can move from one region to another at a finite speed.

Would that be in your ball park?

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I had to do trigonometry, calculus and quadratic equations, but I’ve never used it since my exams.

Reply privately

Reply in forum

Reply +quote

By *hunky GentMan
over a year ago

Stamford

"I had to do trigonometry, calculus and quadratic equations, but I’ve never used it since my exams."

'Trig' I use quite often as an engineer, but not used the others either.

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"Yes. Ask me anything......... I'm waiting to solve.....

Is it possible to prove that for anything (object/causal influence) to propagate between two spatially separated regions of 3D space, A and B, that it must pass through region C (which = not A+B).

Further, that it must travel a unique path through C?

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"Yes. Ask me anything......... I'm waiting to solve.....

Also, is it possible to time travel back to before your next post (but after this one)?

Reply privately

Reply in forum

Reply +quote

By *ealthy_and_HungMan
over a year ago

Princes Risborough, Luasanne, Alderney

normed vector spaces?

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Ive got a scientific calculator thwt i can write 80085 on and make it look like BOOBS

Reply privately

Reply in forum

Reply +quote

By *hunky GentMan
over a year ago

Stamford

[Removed by poster at 09/09/21 12:14:21]

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

[Removed by poster at 09/09/21 12:13:52]

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

"Ive got a scientific calculator thwt i can write 80085 on and make it look like BOOBS

Beautiful mind !!

Reply privately

Reply in forum

Reply +quote

By *hebfg2020Man
over a year ago

Doncaster

I’m an absolute pro at my 7x table on my hands

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"normed vector spaces?"

I'm not actually sure. It's well beyond my capabilities. Philosophically I can make the argument, but I don't know how to prove it mathematically.

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"I’m an absolute pro at my 7x table on my hands

Right! You're in!

Reply privately

Reply in forum

Reply +quote

By *viatrixWoman
over a year ago

Redhill

I’m very close to actuaries

None of that brilliance seems to have rubbed on me though

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

2+2 is 4 minus 1 that’s 3 quick maths

Reply privately

Reply in forum

Reply +quote

By *hebfg2020Man
over a year ago

Doncaster

"I’m an absolute pro at my 7x table on my hands

Right! You're in!"

Sweet I’ll even push the boat out and get my toes out and go up to as much as 20x7

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

"Yes. Ask me anything......... I'm waiting to solve.....

Is it possible to prove that for anything (object/causal influence) to propagate between two spatially separated regions of 3D space, A and B, that it must pass through region C (which = not A+B).

Further, that it must travel a unique path through C?"
what do you mean by propogate ? I'm assuming you mean move in a straight line?

And assuming you mean from any point X (in A) to any point by (in B) there's a unique line. Rather than all points x and y there is the same path.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Im assuming Pi = cheese and onion at this time

Reply privately

Reply in forum

Reply +quote

By *hunky GentMan
over a year ago

Stamford

"Im assuming Pi = cheese and onion at this time"

So long as there's no potato in it.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

"Im assuming Pi = cheese and onion at this time

So long as there's no potato in it.

Hate it when they ruin it like that, no warning either

Reply privately

Reply in forum

Reply +quote

By *hunky GentMan
over a year ago

Stamford

"Im assuming Pi = cheese and onion at this time

So long as there's no potato in it.

Hate it when they ruin it like that, no warning either

Its a lesson to read the ingredients.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Reply privately

Reply in forum

Reply +quote

By *melia DominaTV/TS
over a year ago

Edinburgh (She/Her)

"Was.. not so much now... as they say if you don't use it you loose it..

Electrical and electronic engineering degrees are pretty much maths based throughout..

It’s mad ain’t it. What I had to do tis get qualified vs what I actually use in job.

I was a master at using trig to work out power factors on motors at one point. Not so much anymore

Same. Had to learn loads of complex maths (imaginary numbers, integration, differentiation etc) when I studied engineering. Now I've gotten so rusty with all of it through lack of use!"

Pretty much all of the above..

I have never needed partial differentiation to determine that a circuit has a fault. Freezer spray, a circuit diagram and a good nose repaired 99% of problems.

now if I was designing filters for complex signalling. Then perhaps yes. But even then I'd be using a computer program.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I was in top set at Maths at school and my general arithmetic is pretty good (years of watching Countdown helps

Problem is 95% of the stuff you learnt at school you never use in day to day life so I'd struggle to remember it now if required.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

It was the only exam i failed at school.

Reply privately

Reply in forum

Reply +quote

By *olly_chromaticTV/TS
over a year ago

Bradford and Stockport

"Yes. Ask me anything......... I'm waiting to solve.....

Is it possible to prove that for anything (object/causal influence) to propagate between two spatially separated regions of 3D space, A and B, that it must pass through region C (which = not A+B).

Further, that it must travel a unique path through C?what do you mean by propogate ? I'm assuming you mean move in a straight line?

And assuming you mean from any point X (in A) to any point by (in B) there's a unique line. Rather than all points x and y there is the same path.

Depends whether you accept the parallel proposition ie. Euclidean vs non-euclidean space.

For any sort of proof need details about what type of vector spaces we are talking, and I'd have to swot up on my very ancient knowledge of linear algebra.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

"Ive got a scientific calculator thwt i can write 80085 on and make it look like BOOBS

Brilliant response!

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I studied astrophysics and quantum mechanics at uni so.....

Reply privately

Reply in forum

Reply +quote

By *ealthy_and_HungMan
over a year ago

Princes Risborough, Luasanne, Alderney

1 Normed Spaces. Banach Spaces.

1.1 Vector Space.

Definition 1.1.

1. An arbitrary subset M of a vector space X is said to be linearly independent if

every non-empty finite subset of M is linearly independent.

2. A vector space X is said to be finite dimensional if there is a positive integer

n such that X contains a linearly independent set of n vectors whereas any set of

n + 1 or more vectors of X is linearly dependent. n is called the dimension of X,

written n = dim X.

3. If X is any vector space, not necessarily finite dimensional, and B is a linearly

independent subset of X which spans X, then B is called a basis (or Hamel

basis) of X.

¥Hence if B is a basis for X, then every nonzero x 2 X has a unique repre-

sentation as a linear combination of (finitely many!) elements of B with

nonzero scalars as coefficients.

hope this helps

Reply privately

Reply in forum

Reply +quote

By *aFemmeCoquetteWoman
over a year ago

somewhere, someplace

I've got to have a pretty good head for numbers in my job, some of my qualifications include a lot of maths work

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

Depends whether you accept the parallel proposition ie. Euclidean vs non-euclidean space.

For any sort of proof need details about what type of vector spaces we are talking, and I'd have to swot up on my very ancient knowledge of linear algebra."

Would it be possible to demonstrate that it applies to any/all 3D vector spaces?

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

[Removed by poster at 09/09/21 22:12:27]

Reply privately

Reply in forum

Reply +quote

By *ad NannaWoman
over a year ago

East London

You were trying to work out the trajectory of your spunk stream weren't you.

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"I studied astrophysics and quantum mechanics at uni so....."

Cool! I'd love to go back and study it now.

Would you know the answer?

(For some reason I can't send the full response I have typed)

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"You were trying to work out the trajectory of your spunk stream weren't you.

Guiltyyyyyy!

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

[Removed by poster at 09/09/21 22:18:07]

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

".Hope this helps

I'm sure it does. It'll take me a while to digest it and try to grasp it.

Thanks a mill for taking the time to post that

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Don't want to brag, but I sometimes get 1 away when watching Countdown

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"Don't want to brag, but I sometimes get 1 away when watching Countdown

Reply privately

Reply in forum

Reply +quote

By *olly_chromaticTV/TS
over a year ago

Bradford and Stockport

Depends whether you accept the parallel proposition ie. Euclidean vs non-euclidean space.

For any sort of proof need details about what type of vector spaces we are talking, and I'd have to swot up on my very ancient knowledge of linear algebra.

Would it be possible to demonstrate that it applies to any/all 3D vector spaces?"

I'm very rusty on this stuff (though funnily enough was re-reading a bit of vector algebra for fun

quite recently). I think that within an R3 space it should be possible to prove a unique shortest path including points A, B and C, where A, B and C are distinct, as long as the space is free of singularities. Where "shortest" is with respect to whatever metric, be it a distance measure, time measure, lowest energy path etc. The path is essentially the geodesic that takes in all three points.

With singularities, there may be the possibility of several geodesics going different ways around a singularities?

Putting this into the context of real physical space I think it means that in the vicinity of a black hole all bets are off, but in areas of asymptotically flat space there will be unique paths.

But don't quote me on any of that in your PhD thesis!!

Reply privately

Reply in forum

Reply +quote

By *inky_couple2020Couple
over a year ago

North West

Is someone trying to get help with their homework?!

Reply privately

Reply in forum

Reply +quote

By *ean counterMan
over a year ago

Northants

Depends whether you accept the parallel proposition ie. Euclidean vs non-euclidean space.

For any sort of proof need details about what type of vector spaces we are talking, and I'd have to swot up on my very ancient knowledge of linear algebra.

Would it be possible to demonstrate that it applies to any/all 3D vector spaces?

I'm very rusty on this stuff (though funnily enough was re-reading a bit of vector algebra for fun

With singularities, there may be the possibility of several geodesics going different ways around a singularities?

Putting this into the context of real physical space I think it means that in the vicinity of a black hole all bets are off, but in areas of asymptotically flat space there will be unique paths.

But don't quote me on any of that in your PhD thesis!!

Bloody hell! What a coincidence, that just what I was going to say

Reply privately

Reply in forum

Reply +quote

By *eyond PurityCouple
over a year ago

Haydock

If you need to know how many times 3 goes in to 1 then as many times as C can take is the answer

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

I’ve been good at maths for over 3 decades, amazing to think I’ve been good at maths for nearly 28 years.

Reply privately

Reply in forum

Reply +quote

By *uper SaiyanMan
over a year ago

Birmingham

Im great at maths, just need numbers to work with. Havent seen any numbers since scrolling through this thread. Not a single

Reply privately

Reply in forum

Reply +quote

By *eoeclipseWoman
over a year ago

glasgow

"Im great at maths, just need numbers to work with. Havent seen any numbers since scrolling through this thread. Not a single"

That's rubbish cos I posted numbers...

I have a scientific calculator which I used to tell me what cos & tan were as numbers & went from there as an equation...

No one has said if it was correct or not though

Reply privately

Reply in forum

Reply +quote

By *otMe66Man
over a year ago

Terra Firma

Fastest mathematicians known to man?

The 1980's pub team dart players

They would be able to drink 20 pints of ale, throw spears into a dartboard with amazing accuracy and subtract triple / double and single digits faster than I could use a calculator.

I think they are now extinct

Reply privately

Reply in forum

Reply +quote

By *ewfie02Couple
over a year ago

Ayrshire

2 + 1 = fun

Reply privately

Reply in forum

Reply +quote

By *2000ManMan
over a year ago

Worthing

I work in I.T. so used to working out code using numbers for letters and vice versa as such. Maths however is not my strongest subject but I get by.

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

Depends whether you accept the parallel proposition ie. Euclidean vs non-euclidean space.

For any sort of proof need details about what type of vector spaces we are talking, and I'd have to swot up on my very ancient knowledge of linear algebra.

Would it be possible to demonstrate that it applies to any/all 3D vector spaces?

I'm very rusty on this stuff (though funnily enough was re-reading a bit of vector algebra for fun

With singularities, there may be the possibility of several geodesics going different ways around a singularities?

Putting this into the context of real physical space I think it means that in the vicinity of a black hole all bets are off, but in areas of asymptotically flat space there will be unique paths.

But don't quote me on any of that in your PhD thesis!!

Cheers for this. It's not exactly what I was inquiring about, but it's interesting nonetheless.

My wording was probably a bit unclear. I wasn't necessarily looking to prove the shortest path between A and B or that the shortest path must contain a point in C. More generally, that all paths between A and B must have a point in C.

It seems like a pretty obvious proposition, but I wouldn't be able to prove it mathematically.

Reply privately

Reply in forum

Reply +quote

By *ettaMan OP Man
over a year ago

Based in Kerry, work in Cork.

"Im great at maths, just need numbers to work with. Havent seen any numbers since scrolling through this thread. Not a single"

Can you prove that all paths between A and B must contain a point in C though?

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Is C defined as being non empty?

Even then I think that if A and B share a boundary then you can draw a path

Eg A = circle radius 1

B = donut with hole radius = 1 (with the boundray r = 2 being part of B) then I can get from A to B without giving through C. Zenos paradox type territory.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

Yes.

Masters degree Physics.

...its (probably) more fun than sex.

Reply privately

Reply in forum

Reply +quote

By (user no longer on site)
over a year ago

"Im great at maths, just need numbers to work with. Havent seen any numbers since scrolling through this thread. Not a single"
as my maths teacher used to say ones all the equations were lined up "that's the maths done, the rest are just sums".

Reply privately

Reply in forum

Reply +quote

Post new Message to Thread