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Mathematics
Problem
The curve given by
x
2
(
y
−
2
)
=
y
2
−
4
x
x^{2}(y-2)=y^{2}-4x
x
2
(
y
−
2
)
=
y
2
−
4
x
is studied only in the first quadrant. How many points in the first quadrant have a horizontal tangent line? a)
1
1
1
b)
0
0
0
c)
2
2
2
d)
3
3
3
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