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Mathematics
Mathematics
Problem
Consider the curve defined implicitly by
x
2
+
x
y
+
y
2
=
7
x^{2}+xy+y^{2}=7
x
2
+
x
y
+
y
2
=
7
. Determine the x-coordinate of the point on the curve where
y
y
y
attains a relative (local) maximum.
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