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651Definition of Arithmetic Sequences
652Finding Terms Using the Common Difference
653The Explicit Formula for Arithmetic Sequences
654Finding the Common Difference from Two Terms
655Finding the First Term from Given Information
656Determining if a Sequence is Arithmetic
657Finding the Number of Terms in a Finite Sequence
658Arithmetic Means and Inserting Terms
659Applications of Arithmetic Sequences
660Introduction to Geometric Sequences
661Finding Terms in a Geometric Sequence
662Finding the Common Ratio
663Writing Formulas for Geometric Sequences
664Recursive Formulas for Geometric Sequences
665Geometric Means
666Growth and Decay Applications
667Convergence and Divergence of Geometric Sequences
668Geometric Sequences vs Exponential Functions
669Introduction to Summation Notation
670Evaluating Finite Sums with Sigma Notation
671Index Shifts and Changing Bounds
672Properties of Summation: Linearity
673Formulas for Common Sums
674Writing Series in Summation Notation
675Nested Summations and Double Sums
676Applications of Summation Notation
677What is a Series?
678Finite Series and Sigma Notation
679Infinite Series: Convergence vs Divergence
680Partial Sums and Series Limits
681Sum of a Finite Arithmetic Series
682Sum of a Finite Geometric Series
683Infinite Geometric Series: Convergence Condition
684Telescoping Series
685Properties of Series: Linearity and Splitting
686The nth Term Test for Divergence
687Compound Interest and Financial Growth
688Annuities and Regular Payments
689Loan Amortization
690Population Growth and Decay Models
691Depreciation and Asset Value
692Infinite Series in Geometry
693Stacking and Construction Problems
694Signal Processing and Sampling

651Definition of Arithmetic Sequences
652Finding Terms Using the Common Difference
653The Explicit Formula for Arithmetic Sequences
654Finding the Common Difference from Two Terms
655Finding the First Term from Given Information
656Determining if a Sequence is Arithmetic
657Finding the Number of Terms in a Finite Sequence
658Arithmetic Means and Inserting Terms
659Applications of Arithmetic Sequences
660Introduction to Geometric Sequences
661Finding Terms in a Geometric Sequence
662Finding the Common Ratio
663Writing Formulas for Geometric Sequences
664Recursive Formulas for Geometric Sequences
665Geometric Means
666Growth and Decay Applications
667Convergence and Divergence of Geometric Sequences
668Geometric Sequences vs Exponential Functions
669Introduction to Summation Notation
670Evaluating Finite Sums with Sigma Notation
671Index Shifts and Changing Bounds
672Properties of Summation: Linearity
673Formulas for Common Sums
674Writing Series in Summation Notation
675Nested Summations and Double Sums
676Applications of Summation Notation
677What is a Series?
678Finite Series and Sigma Notation
679Infinite Series: Convergence vs Divergence
680Partial Sums and Series Limits
681Sum of a Finite Arithmetic Series
682Sum of a Finite Geometric Series
683Infinite Geometric Series: Convergence Condition
684Telescoping Series
685Properties of Series: Linearity and Splitting
686The nth Term Test for Divergence
687Compound Interest and Financial Growth
688Annuities and Regular Payments
689Loan Amortization
690Population Growth and Decay Models
691Depreciation and Asset Value
692Infinite Series in Geometry
693Stacking and Construction Problems
694Signal Processing and Sampling

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Lesson 661 of 3,121·16. Sequences and Series (Precalculus)Pro lesson

Finding Terms in a Geometric Sequence

Use the explicit formula a_n = a_1 * r^(n-1) to find any term in a geometric sequence.

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