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Mathematics
Problem
Arrange the parabolas
y
2
=
4
x
y^2 = 4x
y
2
=
4
x
,
y
2
=
12
x
y^2 = 12x
y
2
=
12
x
and
y
2
=
8
x
y^2 = 8x
y
2
=
8
x
in order of decreasing openness (width).
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