1
/
2
x +
1
/
2
(
1
/
2
x +
1
/
2
(
1
/
2
x +
1
/
2
(
1
/
2
x + ... = y
If x = 1,
then the equation likes this:
1
/
2
+
1
/
2
(
1
/
2
+
1
/
2
(
1
/
2
+
1
/
2
(
1
/
2
+ ... = y
1
/
2
+
1
/
4
+
1
/
8
+
1
/
16
+
1
/
32
+ ... = y
y = 1 = x
y = x
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