3.a.3 - 2014 Q6 Answers
The first term of a geometric series is 20 and the common ratio is 7/8.
The sum to infinity of the series is S∞
(a) Find the value of S∞. (2)
The sum to N terms of the series is SN
(b) Find, to 1 decimal place, the value of S12. (2)
(c) Find the smallest value of N, for which: (4)
The sum to infinity of the series is S∞
(a) Find the value of S∞. (2)
The sum to N terms of the series is SN
(b) Find, to 1 decimal place, the value of S12. (2)
(c) Find the smallest value of N, for which: (4)
Answers
