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Mathematics
Problem
How many distinct real points on the curve
x
2
y
+
y
2
=
6
x
x^{2}y+y^{2}=6x
x
2
y
+
y
2
=
6
x
have a horizontal tangent? a)
0
0
0
b)
1
1
1
c)
2
2
2
d)
3
3
3
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