Mathematics for IGCSE & O level - Sequences (Section 1 - No. 30)
Which of the following is the correct formula to find the nth term of an arithmetic sequence?
an+b
a+(n-1)d
ar^(n-1)
n^2+bn+c
解释
This formula describes how to get the nth term in an arithmetic sequence, where 'a' is the first term, 'd' is the common difference, and 'n' is the term number.