9. Sequences, Series, & Induction
Arithmetic Sequences
3:46 minutesProblem 23a
Textbook Question
Textbook QuestionIn Exercises 23–34, write a formula for the general term (the nth term) of each arithmetic sequence. Do not use a recursion formula. Then use the formula for to find the 20th term of the sequence. 1, 5, 9, 13,...
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