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Byju's Answer
Standard XII
Mathematics
Sequence
Write the fir...
Question
Write the first five terms of each of the following sequences whose
n
th terms are:
a
n
=
3
n
−
2
5
Open in App
Solution
a
n
=
3
n
−
2
5
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
q
(
1
)
1) To find the first term of sequence
(
a
1
)
put n=1 in eq(1)
⟹
a
1
=
3
×
1
−
2
5
⟹
a
1
=
3
−
2
5
⟹
a
1
=
1
5
2)To find the second term of sequence
(
a
2
)
put n=2 in eq(1)
⟹
a
2
=
3
×
2
−
2
5
⟹
a
2
=
6
−
2
5
⟹
a
2
=
4
5
3)To find the third term of sequence
(
a
3
)
put n=3 in eq(1)
⟹
a
3
=
3
×
3
−
2
5
⟹
a
3
=
9
−
2
5
⟹
a
3
=
7
5
4) To find the fourth term of sequence
(
a
4
)
put n=4 in eq(1)
⟹
a
4
=
3
×
4
−
2
5
⟹
a
4
=
12
−
2
5
⟹
a
4
=
10
5
⟹
a
4
=
2
5) To find the fifth term of sequence
(
a
5
)
put n=5 in eq(1)
⟹
a
5
=
3
×
5
−
2
5
⟹
a
5
=
15
−
2
5
⟹
a
5
=
13
5
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