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Mathematics
Mathematics
Problem
If
x
=
(
7
+
4
3
)
n
=
[
x
]
+
f
x = (7 + 4\sqrt{3})^n = [x] + f
x
=
(
7
+
4
3
)
n
=
[
x
]
+
f
, where
n
∈
N
n \in N
n
∈
N
and
0
≤
f
<
1
0 \le f < 1
0
≤
f
<
1
then
x
(
1
−
f
)
x(1-f)
x
(
1
−
f
)
is equal to a. 1 b. 0 c. -1 d. even integer
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