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Mathematics
Problem
If
x
2
+
y
2
=
4
x^2 + y^2 = 4
x
2
+
y
2
=
4
, the maximum value of
x
3
+
y
3
x
+
y
\dfrac{x^3 + y^3}{x + y}
x
+
y
x
3
+
y
3
is .....
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