Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
x
+
1
x
=
2
cos
θ
x + \frac{1}{x} = 2 \cos \theta
x
+
x
1
=
2
cos
θ
then find the value of
x
n
+
1
x
n
x^n + \frac{1}{x^n}
x
n
+
x
n
1
.
Browse the problem library