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Kosovo MO 2009 Grade 11, Problem 2
Kosovo MO 2009 Grade 11, Problem 2
Source: Kosovo MO 2009 Grade 11, Problem 2
June 7, 2021
algebra
Problem Statement
Solve the equation:
x
2
+
2
x
c
o
s
(
x
ā
y
)
+
1
=
0
x^2+2xcos(x-y)+1=0
x
2
+
2
x
cos
(
x
ā
y
)
+
1
=
0
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