-4/39*x=18/1 find x
Answers
Answered by
1
Answer:
Given:
x
+
1
x
=
√
3
Note that:
x
+
1
x
=
2
cos
(
π
6
)
x
+
1
x
=
(
cos
(
π
6
)
+
i
sin
(
π
6
)
)
+
(
cos
(
−
π
6
)
+
i
sin
(
−
π
6
)
)
So by de Moivre's formula:
x
17
+
1
x
17
=
2
cos
(
17
π
6
)
=
2
cos
(
5
π
6
)
=
−
√
3
Step-by-step explanation:
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Answered by
1
Answer:
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