If a_1=9a
1
=9 and a_n=a_{n-1}+2a
n
=a
n−1
+2...
Mathematics, 03.12.2021 17:40 Nigward666
If a_1=9a
1
=9 and a_n=a_{n-1}+2a
n
=a
n−1
+2 then find the value of a_4a
4
Answers: 2
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