Sal finds an explicit formula of a geometric sequence given the first few terms of the sequences. Then he explores equivalent forms the explicit formula and finds the corresponding recursive formula.

A geometric sequence is a special progression, or a special sequence, of numbers, where each successive number is a fixed multiple of the number before it. Let me explain what I'm saying.

Unit 16: Geometric constructions Constructing bisectors of lines and angles Constructing regular polygons inscribed in circles Constructing circumcircles and incircles Constructing a line tangent to a …

The common ratio of a geometric series is 3 and the sum of the first 8 terms is 3280 . What is the first term of the series?

Get a front row seat to Sal's step-by-step solutions to finite geometric series. Learn how to find the sum of the first 50 terms of a series by multiplying each term by a common ratio.

Find the recursive formula of a geometric sequence given the first few terms or given an explicit formula.

When you’re dealing with sequences, there are two main ways to describe them: recursive and explicit formulas. A recursive formula tells you how to get from one term to the next. It’s like following a …

A geometric series is the sum of the terms of a geometric sequence. Learn more about it here.

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Extend geometric sequences: negatives & fractions Get 3 of 4 questions to level up!