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KEAM 2020 Math Paper
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© examsnet.com
Question : 60
Total: 120
The major and minor axis of the ellipse
400
x
2
+
100
y
2
=
40000
respectively are
100 and 20
20 and 10
40 and 20
400 and 100
16 and 8
Validate
Solution:
400
x
2
+
100
y
2
=
40000
4
x
2
+
y
2
=
400
x
2
100
+
y
2
400
=
1
x
2
10
2
+
y
2
20
2
=
1
a
=
20
,
b
=
10
2
a
=
40
,
2
b
=
20
© examsnet.com
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