# Which is Your Favourite Irrational Number?

This discussion is closed.
18 years ago
#21
I'm for e myself -I just love those natural logarithms!
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18 years ago
#22
(Original post by Ben.S.)
I'm pro root pi!!!

Ben
lol rooting it doesnt make it any more irrational
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18 years ago
#23
(Original post by edders)
lol rooting it doesnt make it any more irrational
No, but it's the integral of exp^(-x^2) - what fun. A beautiful piece of maths.

Ben
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18 years ago
#24
(Original post by Ben.S.)
No, but it's the integral of exp^(-x^2) - what fun. A beautiful piece of maths.

Ben
hmm thats a bit beyond me, i only did alevel maths.
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18 years ago
#25
(Original post by Ben.S.)
No, but it's the integral of exp^(-x^2) - what fun. A beautiful piece of maths.

Ben
Another reason why I like e -it's causing me the least trouble in calculus
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18 years ago
#26
(Original post by elpaw)
i wonder if that is rational?
Infinitely unlikely.
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18 years ago
#27
(Original post by Linda)
Another reason why I like e -it's causing me the least trouble in calculus
dy/dx of e^x = e^x
nice and easy
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18 years ago
#28
What's phi? I did A-Level Maths and never heard of it!
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18 years ago
#29
dy/dx of e^x = e^x
this is the same reason i like e, and it has many uses, roots of primes i aint used all that much, and pi gets a bit boring after a while. tho phi pi and e are all cool numbers
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18 years ago
#30
(Original post by Helenia)
What's phi? I did A-Level Maths and never heard of it!
I was wondering the same thing. Did/do you visit BBC boards?
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18 years ago
#31
(Original post by Bigcnee)
Infinitely unlikely.
What makes you so sure? A proof please...
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18 years ago
#32
(Original post by Helenia)
What's phi? I did A-Level Maths and never heard of it!
phi (the 'golden ratio') = 1/2 + root5/2 and 1/2 – root5/2

http://www.mcs.surrey.ac.uk/Personal...html#simpledef
it crops up a lot in nature
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18 years ago
#33
(Original post by Nylex)
I was wondering the same thing. Did/do you visit BBC boards?
I did indeed. Why, did/do you? Which ones?

Thanks for the explanation, edders.
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18 years ago
#34
(Original post by Helenia)
I did indeed. Why, did/do you? Which ones?
Yeah, I used to. Can't remember what it was called now though. Your name just looked familiar.
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18 years ago
#35
(Original post by Helenia)
What's phi? I did A-Level Maths and never heard of it!
It's the solution to the quadratic equations:
x² = x + 1, or x - 1 = 1/x.

Its all so the ratio of consecutive fibonacci numbers as they get really big, the larger divided by the smaller. apart from that its more or less completely useless.
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18 years ago
#36
Maths is a **** subject.
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18 years ago
#37
(Original post by DamianHolt)
Maths is a **** subject.
Why?
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18 years ago
#38
(Original post by Nylex)
Why?
because it's boring, useless, and absolutely impossibly-rock-hard.
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18 years ago
#39
(Original post by Merry)
They all are good!!! but my vote is for Phi: a very interesting number!
you geek
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18 years ago
#40
(Original post by DamianHolt)
because it's boring, useless, and absolutely impossibly-rock-hard.
It may be boring to you, but it's certainly not useless.
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