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Standard XI
Mathematics
NCERT
Question
a
n
=
n
n
2
+
5
4
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Solution
Verified by Toppr
Substituting
n
=
1
,
2
,
3
,
4
,
5
we obtain
a
1
=
1.
1
2
+
5
4
=
6
4
=
3
2
a
2
=
2.
2
2
+
5
4
=
2.
9
4
=
9
2
a
3
=
3.
3
2
+
5
4
=
3.
14
4
=
21
2
a
4
=
4.
4
2
+
5
4
=
21
a
5
=
5.
5
2
+
5
4
=
5.
30
4
=
75
2
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Q5
lim
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