Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
9. Sequences, Series, & Induction
Arithmetic Sequences
1:39 minutes
Problem 4a
Textbook Question
Textbook QuestionIn Exercises 1–14, write the first six terms of each arithmetic sequence. a1= -8, d=5
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Arithmetic Sequence
An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant. This difference is known as the common difference (d). In this case, the first term (a1) is -8, and the common difference is 5, meaning each term is obtained by adding 5 to the previous term.
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First Term and Common Difference
The first term of an arithmetic sequence is the initial value from which the sequence begins, denoted as a1. The common difference (d) is the fixed amount added to each term to get the next term. For the given sequence, a1 = -8 and d = 5, which will guide the calculation of subsequent terms.
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Finding Terms of the Sequence
To find the terms of an arithmetic sequence, you start with the first term and repeatedly add the common difference. For example, starting from a1 = -8, the second term is a1 + d, the third term is a1 + 2d, and so on. This process continues until the desired number of terms is reached, in this case, the first six terms.
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