lesson
Deriving the Sum Formula for Finite Geometric Series
Derive the algebraic formula S_n = a_1(1 - r^n)/(1 - r) for the sum of the first n terms of a geometric series.

Derive the algebraic formula S_n = a_1(1 - r^n)/(1 - r) for the sum of the first n terms of a geometric series.
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9th Grade · Math · Open Global Math
9 lessons
Represent arithmetic and geometric sequences recursively and explicitly, link to linear/exponential growth, and derive and evaluate geometric series.