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AP EAMCET Engineering 2013 Solved Paper
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© examsnet.com
Question : 135
Total: 160
The mid-point of a chord of the ellipse
x
2
+
4
y
2
−
2
x
+
20
y
=
0
is
(
2
,
−
4
)
. The equation of the chord is
x
−
6
y
=
26
x
+
6
y
=
26
6
x
−
y
=
26
6
x
+
y
=
26
Validate
Solution:
Equation of chord at
(
2
,
−
4
)
is
T
=
S
′
⇒
2
x
+
4
y
(
−
4
)
−
(
x
+
2
)
+
10
(
y
−
4
)
=
(
2
)
2
+
4
(
−
4
)
2
+
2
(
2
)
+
20
(
−
4
)
⇒
2
x
−
16
y
−
x
−
2
+
10
y
−
40
=
4
+
64
−
4
−
80
⇒
x
−
6
y
=
42
−
16
⇒
26
© examsnet.com
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