03312021, 12:23 PM  #1 
FFR Player
Join Date: Oct 2020
Age: 19
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what's the square root of 5
what's the square root of 5
I got 2.92401774 and idk help 
03312021, 01:11 PM  #2 
The Dominator
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Location: North Bay, ON
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Posts: 8,904

Re: what's the square root of 5
the square root of 69 is 8.some

03312021, 01:20 PM  #3 
FFR Veteran
Join Date: Jul 2016
Posts: 56

Re: what's the square root of 5
We can linearize the sqrt(x) at x = 4 to get the line y  2 = 1/4(x  4)
by plugging in 5 to this line we get y  2 = 1/4(54) which simplifies to y = 1/4 + 2 therefore sqrt(5) is about 2.25, however this is an overestimate since sqrt(x) is concave down for the entire interval for which it is defined. Or just plug it into a calculator and get 2.2360679775... 
03312021, 01:52 PM  #4 
( ﾟдﾟ)彡
Join Date: Apr 2006
Posts: 647

Re: what's the square root of 5
yes
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03312021, 03:16 PM  #5 
they / xe
Join Date: Nov 2008
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Re: what's the square root of 5
sqrt(5) = 2 + 1/(2 + sqrt(5)), hope this helps
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03312021, 04:20 PM  #6 
FFR & TWG Player
Join Date: Jul 2005
Posts: 4,194

Re: what's the square root of 5
That moment when you realize a square root is the same as ^(1/2).

03312021, 08:14 PM  #7 
D6 FFR Legacy Player
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Re: what's the square root of 5
2*phi  1 where phi is the golden ratio
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03312021, 08:42 PM  #8 
local idiot
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Re: what's the square root of 5

0412021, 02:52 AM  #9 
Join Date: Nov 2017
Location: Pacific Timezone, USA Age: 19.2
Posts: 357

Re: what's the square root of 5
Phi is such an insane number!!
Did you guys know that phi^2 = phi + 1 and phi^1 = phi  1
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0412021, 02:02 PM  #10  
they / xe
Join Date: Nov 2008
Posts: 718

Re: what's the square root of 5
Quote:
This is a fun little trick.
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0412021, 06:52 PM  #11 
ᅠ
Join Date: Aug 2008
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Re: what's the square root of 5
AMZN 3200C 2022
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0462021, 08:51 PM  #12 
FFR Player
Join Date: Oct 2020
Age: 19
Posts: 3

Re: what's the square root of 5
figured out I'm terribly wrong
2.92401774 to the third power is apparently 25 though 
0462021, 09:11 PM  #13 
Join Date: Nov 2017
Location: Pacific Timezone, USA Age: 19.2
Posts: 357

Re: what's the square root of 5
Hmmm looks like you took the cube root of 5 squared then
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0472021, 11:46 AM  #14 
D7 Elite Keymasher
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Re: what's the square root of 5
please keep us updated
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