Learn how to write the rule of an arithmetic sequence given a sequence

The video tutorial explains how to find the number of terms in an arithmetic sequence using the sum formula. It begins by introducing the sum formula and determining the type of sequence. The teacher then guides students through identifying the common difference and applying the formula to find the number of terms. The session concludes with clarifications and addressing student questions.

What is the formula for the sum of the first n terms of an arithmetic sequence?

How do you determine if a sequence is arithmetic?

What is the common difference (d) in the given arithmetic sequence?

What is the first term (a1) of the arithmetic sequence discussed?

How do you calculate the nth term (aN) of an arithmetic sequence?