🚀 go-pugleaf

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>	 a = $@"e(J(($@"e(J5 $@!^(J 1) / 2)
>	   = 1.272019649... , 0.786151377...
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>	 127/100,1272/1000....

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sqrt(2)-1 = 1/(sqrt(2)+1)
	   = 1/(2+(sqrt(2)-1))
	   = 1/(2+1/(sqrt(2)+1))
	   = 1/(2+1/(2+(sqrt(2)-1)))
	   = 1/(2+1/(2+1/(sqrt(2)+1)))
	   = 1/(2+1/(2+1/(2+(sqrt(2)-1))))
	   = 1/(2+1/(2+1/(2+1/(sqrt(2)+1))))
	   = 1/(2+1/(2+1/(2+1/(2+(sqrt(2)-1))))),

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sqrt(2)   = 1 + 1/(2+1/(2+1/(2+1/(2+1/(2+1/(2+...))))))

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