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KEAM 2019 Math Paper
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© examsnet.com
Question : 16
Total: 121
The length of the Latus rectum of the parabola
x
=
a
y
2
+
b
y
+
c
is
4
a
3
3
4
a
1
2
a
1
a
a
3
Validate
Solution:
Given,
x
=
a
y
2
+
b
y
+
c
⇒
(
y
+
b
2
a
)
2
=
1
a
(
x
+
b
2
−
4
a
c
4
a
)
Latus rectum
=
1
a
© examsnet.com
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