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Mathematics
Problem
For the parabola
y
2
=
4
a
x
y^{2}=4ax
y
2
=
4
a
x
, the length of its latus rectum is a)
8
a
8a
8
a
b)
4
a
4a
4
a
c)
2
a
2a
2
a
d)
a
2
a^{2}
a
2
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