Explicit formulas for geometric sequences - Khan Academy
Solve problems such as: The first four terms in a geometric sequence are 1/3, 1, 3, and 9. Find an explicit formula for the sequence.
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Geometric series introduction (video) | Khan Academy
Learn how money grows in a bank account with geometric series! Discover how each deposit grows by a fixed percentage every year, creating a pattern. This pattern forms a geometric …
Geometric series formula (practice) | Khan Academy
Practice your understanding of the geometric series formula.
Finite geometric series formula (video) | Khan Academy
A finite geometric series can be solved using the formula a (1-rⁿ)/ (1-r). Sal demonstrates how to derive a formula for the sum of the first 'n' terms of such a series, emphasizing the importance …
Convert recursive & explicit forms of geometric sequences
Given the explicit formula of a geometric sequence, find its recursive formula, and vice versa.
Geometric series formula (practice) | Series | Khan Academy
Precalculus Course: Precalculus > Unit 9 Geometric series introduction Geometric series intro Finite geometric series formula Worked examples: finite geometric series
Proof of infinite geometric series as a limit - Khan Academy
The video provides a proof for the sum of an infinite geometric series using limits. When the absolute value of the common ratio (r) is between 0 and 1, the limit of the series converges to …
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Sequences | Algebra 1 | Math | Khan Academy
Learn Intro to geometric sequences Extending geometric sequences Using explicit formulas of geometric sequences Using recursive formulas of geometric sequences