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Mathematics
Mathematics
Problem
If
x
n
=
cos
(
π
2
n
)
+
i
sin
(
π
2
n
)
x_n = \cos\left(\frac{\pi}{2^n}\right) + i\sin\left(\frac{\pi}{2^n}\right)
x
n
=
cos
(
2
n
π
)
+
i
sin
(
2
n
π
)
then
x
1
x
2
x
3
…
…
∞
x_1 x_2 x_3 \dots \dots \infty
x
1
x
2
x
3
……
∞
is equal to -
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