Old 03-31-2021, 12:23 PM   #1
Cat O Happy
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Exclamation what's the square root of 5

what's the square root of 5
I got 2.92401774
and idk
help
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Old 03-31-2021, 01:11 PM   #2
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Default Re: what's the square root of 5

the square root of 69 is 8.some
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Old 03-31-2021, 01:20 PM   #3
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Default 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(5-4) 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...
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Old 03-31-2021, 01:52 PM   #4
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Default Re: what's the square root of 5

yes
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Old 03-31-2021, 03:16 PM   #5
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Default Re: what's the square root of 5

sqrt(5) = 2 + 1/(2 + sqrt(5)), hope this helps
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Old 03-31-2021, 04:20 PM   #6
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Default Re: what's the square root of 5

That moment when you realize a square root is the same as ^(1/2).
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Old 03-31-2021, 08:14 PM   #7
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Default Re: what's the square root of 5

2*phi - 1 where phi is the golden ratio
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Old 03-31-2021, 08:42 PM   #8
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Default Re: what's the square root of 5

Quote:
Originally Posted by Dynam0 View Post
the square root of 69 is 8.some
cause i been tryna work it out ohhh
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Old 04-1-2021, 02:52 AM   #9
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Default Re: what's the square root of 5

Quote:
Originally Posted by WirryWoo View Post
2*phi - 1 where phi is the golden ratio
Phi is such an insane number!!

Did you guys know that

phi^2 = phi + 1

and

phi^-1 = phi - 1
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Old 04-1-2021, 02:02 PM   #10
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Default Re: what's the square root of 5

Quote:
Originally Posted by Matthia View Post
Phi is such an insane number!!

Did you guys know that

phi^2 = phi + 1

and

phi^-1 = phi - 1

This is a fun little trick.
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Old 04-1-2021, 06:52 PM   #11
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Default Re: what's the square root of 5

AMZN 3200C 2022
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Old 04-6-2021, 08:51 PM   #12
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Default Re: what's the square root of 5

figured out I'm terribly wrong
2.92401774 to the third power is apparently 25 though
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Old 04-6-2021, 09:11 PM   #13
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Default Re: what's the square root of 5

Hmmm looks like you took the cube root of 5 squared then
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Old 04-7-2021, 11:46 AM   #14
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Default Re: what's the square root of 5

please keep us updated
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