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Perfect solution...I also have solved this problem using this method...for infinite series this method(supposing the result as x) is very useful.
I just recognized it as phi
same solution :)
Plz illustrate 1st step
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x is the exact same as the one in the second layer because the number of layers between both x s are the same due to the fraction having infinite layers.
for(int i=0;i<10;i++) { x= 1/(1+x); }
cout<<x;
i did it vai programming
The given expression can be written as : 1 + x 1 because , if you remove one element from an infinite set of things, that won't change the infinity much. So here we assume the things after the number 1 in the denominator to be x again(by virtue of above property ).
Rest solution: 1 + x 1 = x 1=(\x^{2}) +x So, \x = 2 − 1 + 5 0 . 5 since\ (\sqrt{5}=2.23) \x = 2 − 1 + 2 . 2 3 \x = 0 . 6 1 8
https://www.xtremepapers.com/community/attachments/sat-work-png.49171/
x = 1/(1+x) x = (sqrt 5 - 1)/2 = 0.618, x = - (sqrt 5 + 1)/2 = -1.618 x = 0.62 or x = -1.62
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This can be written as 1 + x 1 = x ⟹ x 2 + x − 1 = 0 ⟹ x = 2 − 1 ± 5 .
Clearly x > 0 , so x = 2 5 − 1 = 0 . 6 2 to 2 decimal places.