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Write a linear equation that represents the arithmetic sequence 12,6,3,1.5

Sagot :

Use the formula
a
n
=
a
1
r
n

1
a
n
=
a
1
r
n
-
1
to identify the geometric sequence.
a
n
=
12
2
n

1
a
n
=
12
2
n
-
1
Hope this helps!