Application of golden section point How is the golden section used in the gold and foreign exchange market,

Application of golden section point How is the golden section used in the gold and foreign exchange market,

Also known as Fibonacci callback line
There are several points 23.638.250.061.8, which are the most common callback percentage positions
This is the most likely position for a callback. When it comes to these checkpoints, there will be resistance or support in the minds of speculators, thus forming this wonderful application
1、2（X＋3）＝2（X－3）
2、2X（3－X）＝4
Question 1: 2x + 6 = 2x-6, 6 = - 6, no solution
Question 2: 2x (3-x) = 4, 6x-2x ^ 2 = 4, x ^ 2-3x + 2 = 0, then factorize, (X-2) (x-1) = 0 to get x = 2, or x = 1
1.2(X+3)=2(X-3)
2(X+3)-2(X-3)=0
2(X+3-(X-3))=0
2(X+3-X+3)=0
X+3-X+3=0
There is no solution to this problem
2.2x3-2X=4
6-4=2X
2=2X
X=1
The golden section?
The expert help! Known line AB 9 cm long, how to get its golden section point? Step by step to write clearly, I rookie, thank you!
Let AB be 9cm long, and its golden section is C, AC = X
AC/CB=CB/AB
x/(9-x)=(9-x)/9
(9-x)²=9x
x²-27x+81=0
x=(27±9√5)/2
X1 = (27 + 9 √ 5) / 2 (not rounding off)
x2=(27-9√5)/2
So, AC = (27-9 √ 5) / 2cm
9 * ((radical 5-1) / 2)
Mom went to the mall to buy clothes, and she gave a 20% discount on the clothes. After repeated bargaining, mom finally reduced the original price by 5%. She asked how much the original price of the clothes was, and finally bought it for 150 yuan
Suppose the original price of this dress is x yuan,
Then: X * (0.8-5%) = 150
X*0.75=150
X = 200 yuan
A: the original price of this dress is 200 yuan
Let the original price be X
Then: X (1-5%) * 0.8 = 150
X = 3750 / 19
0.8x-0.05x=150
0.75x=150
x=200
Original price 200
Suppose the original price is x yuan
0.8x-0.05x=150
0.75x=150
x=200
What is the percentage value of the golden section
It is expressed as (√ 5-1) / 2 by fraction
Approximately equal to 0.618
zero point six one eight
(√ 5-1) / 2 is about 0.618
(radical 5-1) / 2
Approximately equal to 0.618
zero point six one eight
zero point six one eight
Why is the golden ratio
For example: some people say that people's navel is the golden section point.
Then upper body / lower body = lower body / whole height
The upper / lower body ratio calculated from this is called golden ratio, and the navel is called golden section.
Let X be the upper body and 1 be the lower body
X/1=1/(1+X)
X²+X-1=0
The ratio is x = (√ 5-1) / 2, which is about 0.618
Why is the golden ratio
For example: some people say that people's navel is the golden section point.
Then upper body / lower body = lower body / whole height
The upper / lower body ratio calculated from this is called golden ratio, and the navel is called golden section.
Let X be the upper body and 1 be the lower body
X/1=1/(1+X)
X²+X-1=0
The ratio is x = (√ 5-1) / 2, which is about 0.618
The ratio is (√ 5-1) / 2 or the root of two is five minus one
Proof method
Let the length of a line AB be a,
C is on the golden section near B and AC is B
AC/AB=BC/AC
b^2=a×(a-b)
b^2=a^2-ab
a^2-ab+(1/4)b^2=(5/4)×b^2
How to solve two mathematical equations?
S △ (75 + 65) - s △ (85 + 65) = 5, the process of calculation
(1 / 16-1 / 20) △ 1 / 20 = 25%, calculation process
S/140 - S/150 =5,
S（1/140-1/150)=5,
S/2100=5,
S=5×2100,
S=10500.
（1/16-1/20）÷1/20=25%
=（5-4）/80÷1/20
=1/80×20
=1/4=25％
The problems ahead have been solved by my friends,
I'll talk about the solution of the second equation
（1/16-1/20）x/(1/20)=25%
(1/80)x * 20=1/4
(1/80)x=1/80
X=1
(S/140) - (S/150 ）=5
Multiply both sides of the equation by 140 * 150 at the same time
150S-140S=105000
10S=105000
S=10500
Where are the unknowns in the second question?
s/140-s/150=5
10s/(140*150)=5
10s/21000=5
s=5*21000/10
s=10500
Second question
(20-16)/(16*20)*20=0.25=1/4
What is the golden section of the human body
The most perfect human body: the distance from navel to sole of foot / the distance from top of head to sole of foot = 0.618
The most beautiful face: distance from eyebrow to neck / distance from top of head to neck = 0.618
waist
That's what the teacher said
West West
navel
1. A school arranges dormitories for ninth grade students. If there are six students in each dorm, three students can't live in it. If there are eight students in each dorm, one dorm only has three students and two dormitories are empty. Ask the number of students in the grade and the number of dormitories
2. There are three kinds of RMB. Fifteen Jiao and one yuan are 37 banknotes worth 13 yuan and nine Jiao. It is known that the value ratio of one Jiao to five jiao is 4:5. How many of the three banknotes are there?
1. There are X students and Y rooms in the dormitories. Substituting y = 12 into (1) we can get: 12 × 6 + 3 = x 6y + 3 = x (1) 35 = x (Y-3) 8 + 3 = x (2)
When a stage is 10 meters long, the actor should stand at the golden section of the stage, and the actor should stand at the end of the stage______ It's five meters away
∵ actors should stand at the golden section of the stage when they announce the curtain. The distance from the stage is 10 × (1-5-12) = 15-55 (m). Or 10 - (15-55) = 55-5 (m). So the answer is: 15-55 or 55-5
(1/8+1/X)*4=2/3
(1/8+1/X)*4=2/3
1/8*4+1/x*4=2/3
4/8+4/x=2/3
1/2+4/x=2/3
x/2x+8/2x=2/3
x+8/2x=2/3
The cross phase product is equal
(x+8)*3=2x*2
3x+24=4x
4x-3x=24
x=24
I write it step by step. It's a bit messy. You can make it clear by thanking me on the paper