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Greg
30-03-2014, 09:57 AM
What does this symbol mean in maths? ≈

I should know the answer having got nothing less than A+ in my maths papers at uni, but buggered if I can remember it ... living beyond my expected years does have its drawbacks!!! :o

pctek
30-03-2014, 10:04 AM
is approximately equal to

x ≈ y means x is approximately equal to y.

From Wiki

Although...what the hell is approximately equal anyway? Sounds like a guess. Builders - hey this beam is ≈ to the other one......right.

Greg
30-03-2014, 10:27 AM
Although...what the hell is approximately equal anyway? Sounds like a guess. Builders - hey this beam is ≈ to the other one......right. LOL @ you! :thumbs: But thanks. As I said, I feel dumb cos I shoulda know that.

Agent_24
30-03-2014, 10:30 AM
Close enough that for most intents and purposes it is the same, but when you get right down to it, it isn't.

R2x1
30-03-2014, 02:29 PM
It means identical, but not as quite identical as our deluxe model, available at extra cost. ;)

pctek
30-03-2014, 03:15 PM
Close enough that for most intents and purposes it is the same, but when you get right down to it, it isn't.

Yep. I can't imagine maths (usually such a precise thing) having such a symbol.
Husbands first ever bathroom DIY, he ≈ two wall panels.

That's why we ended up with a join/patched on bit in one of them ever after....

Terry Porritt
30-03-2014, 05:57 PM
is approximately equal to

x ≈ y means x is approximately equal to y.

From Wiki

Although...what the hell is approximately equal anyway? Sounds like a guess. Builders - hey this beam is ≈ to the other one......right.

Well. you've really answered your own question, this is where maths meets the physical world of impreciseness and approximation.

What is much more amazing is how well the abstract but precise world of mathematics is able to describe and model the real world.

pcuser42
30-03-2014, 05:57 PM
Although...what the hell is approximately equal anyway? Sounds like a guess. Builders - hey this beam is ≈ to the other one......right.

22/7 ≈ pi. ;)

Winston001
30-03-2014, 07:43 PM
22/7 ≈ pi. ;)

Actually 22/7 does = pi. Where the difficulty lies is converting the fraction to decimal.

Thus 3.14159 ≈ pi.

Damn I'm boring. Soz. :D

inphinity
30-03-2014, 08:28 PM
Actually 22/7 does = pi. Where the difficulty lies is converting the fraction to decimal.

22/7 > pi, there have been multiple proofs of this.

@pctek - if the two beams differ in length by 3 microns, then technically they would be approximately equal, but the difference is so minuscule as to be effectively zero.

pctek
31-03-2014, 07:00 AM
@pctek - if the two beams differ in length by 3 microns, then technically they would be approximately equal, but the difference is so minuscule as to be effectively zero.

Ok.......bit hard to measure that.:D

R2x1
31-03-2014, 07:31 AM
Alright, hard to measure, but ≈ easy to clean up the sanding dust after you sand the long one to length.

Winston001
31-03-2014, 09:28 PM
22/7 > pi, there have been multiple proofs of this.

Thanks. Live and learn lol.

pctek
01-04-2014, 02:35 PM
Alright, hard to measure, but ≈ easy to clean up the sanding dust after you sand the long one to length.
I just thought of a use.
Cooking.

≈ 1/2 cup onions etc....

Billy T
01-04-2014, 03:28 PM
Yep. I can't imagine maths (usually such a precise thing) having such a symbol.
Husbands first ever bathroom DIY, he ≈ two wall panels.

That's why we ended up with a join/patched on bit in one of them ever after....

Bunnings couldn't supply 3.4 metre 100 x 75 so I had to join a bit on the top, then my custom trellis was ≈ 1.8 x 1.5 and ≈ 1.8 x 90, which cocked up my post spacings and they didn't match up the way I planned!

That feral ≈ has a lot to answer for!

I wouldn't mind betting one of them was on board Flight MH370, and another was probably hanging around that League 3-man spear-tackle that created another quadraplegic.

Cheers

Billy 8-{(