What is an arithmetic sequence? For many of the examples above, the pattern involves adding or subtracting a number to each term to get the next term. Sequences with such patterns are called …

Sequences are a special type of function that are useful for describing patterns. In this unit, we'll see how sequences let us jump forwards or backwards in patterns to solve problems.

Sal introduces arithmetic sequences and their main features, the initial term and the common difference. He gives various examples of such sequences, defined explicitly and recursively.

Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,...

What is an arithmetic sequence? For many of the examples above, the pattern involves adding or subtracting a number to each term to get the next term. Sequences with such patterns are called …

Given the first few terms in an arithmetic sequence, find the next term in the sequence.

Get comfortable with the basics of explicit and recursive formulas for arithmetic sequences.

Learn how to write an arithmetic sequence in general terms, using a common difference d and a first term a. Next, we'll see that this formula is equivalent to multiplying the average of the first and last …

Practice Up next for you: Extend arithmetic sequences Get 3 of 4 questions to level up!

Given the formula of an arithmetic sequence, either in explicit form or in recursive form, find a specific term in the sequence.