Card 1 of 20
What is the next term of 3,6,12,24,…3,6,12,24,\ldots3,6,12,24,…?
A
When ∣r∣<1|r|<1∣r∣<1, rn→0\boxed{r^n\to0}rn→0 as n→∞n\to\inftyn→∞.
B
484848
C
545454
D
For r≠1r\ne1r=1, the finite geometric-series formula is Sn=a(1−rn)1−r\boxed{S_n=\frac{a(1-r^n)}{1-r}}Sn=1−ra(1−rn).
Card 1 of 20
3.4.6 Sequences and Series (A-level only) Flashcards
20 flashcards on WJEC A Level Maths 3.4.6 Sequences and Series (A-level only): the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4.