?(pleaese ask me to persian) speak farsi
2007-01-09 00:47:38 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
phi is also called the "golden mean." This number is defined as a particular ratio. Draw a line segment labeled AB and select an interior point labeled C. We'll call the distance from A to C (the length of the line segment AC) "a"; and we'll call the distance from C to B (the line segment CB) "b". Now if the following ratio holds then "a" is phi:
((a + b)) / a = (b / a)
So, suppose that we drew a line segment such that "b" was exactly equal to 1, then let's solve the above equation for "a".
((a + 1) / a) = (1 / a)
Multiply both sides by "a" and collect terms together and to have
a^2 - a - 1 = 0
From the quadratic formula (choosing the positive root) we get
a = (1 + sqrt(5)) / 2 which is irrational and roughly 1.618033989
This number has the property that 1/phi = phi -1 (try it on your calculator!).
The ratio is visible in a number of ways. If you look at a picture of the Acropolis in Athens, the rectangular front wall has the proberty that its length divided by its height is the golden mean, or phi.
HTH
Charles
2007-01-09 01:49:44 · answer #1 · answered by Charles 6 · 1⤊ 0⤋
uncomplicated. The phi quantity is the style of stuff you are able to decrease an apple phi into and the holy grail is what you rigidity the apples by once you end stewing them for the phi.
2016-12-16 05:13:59 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Sorry can't speak farsi.
Phi is the 21st Greek letter.
If you mean pi - it's 22/7
2007-01-09 00:57:40 · answer #3 · answered by Anonymous · 0⤊ 1⤋
http://en.wikipedia.org/wiki/Golden_ratio
Sorry! Doesn't seem to be a farsi translation for this page.
Phi is the golden ratio, NOT pi. It is aproximately 1.618
Persian site: http://www.aoum.persianblog.com/1385_1_12_aoum_archive.html
2007-01-09 01:06:25 · answer #4 · answered by robcraine 4 · 0⤊ 0⤋
phi - it's symbol is : π
As a decimal it is : 3∙141 592 654..... ≈ 3∙142
As a fraction it is : 22 / 7
2007-01-09 01:51:53 · answer #5 · answered by Brenmore 5 · 1⤊ 2⤋
phi number is the ratio of the total length of a complete circle to the diameter of the circle and its value is approximately 3,14.
2007-01-09 00:56:31 · answer #6 · answered by Salih D 1 · 0⤊ 2⤋
it is the ratio between the circumference and diameter of a circle
its approx. value is 3.14 or more correctly 22/7( approx )
2007-01-09 01:29:06 · answer #7 · answered by aneesh 1 · 0⤊ 1⤋
phi?erm..22/7 or 3.142
phi awez show up in a calculation..
in a complex calculation,phi showed up oftenly..
i'm no expert..but at least that what i thought,hehehe..
2007-01-09 01:02:59 · answer #8 · answered by LiquidSilver 3 · 0⤊ 2⤋
around 1.62, I think
2007-01-09 00:56:05 · answer #9 · answered by Trent C 1 · 0⤊ 0⤋
I think 3.14
2007-01-09 00:57:41 · answer #10 · answered by Silver Fox 3 · 0⤊ 2⤋