For each of the following, decide if the given series is a geometric series.
A. \(5 + 5 x + 5 x^2 + 5 x^4 + 5 x^8 + \cdots\) :
Is this a geometric series?
If this is a geometric series, enter
the first term:
and the ratio between successive terms:
(Enter na for the first term and ratio if this is not a geometric series.)
B. \(5 x^5 + 5 x^{6} + 5 x^{7} + 5 x^{8} + \cdots\) :
Is this a geometric series?
If this is a geometric series, enter
the first term:
and the ratio between successive terms:
(Enter na for the first term and ratio if this is not a geometric series.)
C. \(5 - 25 + 125 - 625 + 3125 - \cdots\) :
Is this a geometric series?
If this is a geometric series, enter
the first term:
and the ratio between successive terms:
(Enter na for the first term and ratio if this is not a geometric series.)