Today’s Objectives: Today’s Agenda Given the partial sum of a geometric series, find the specific n th term Find partial sums of arithmetic and geometric.

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Today’s Objectives: Today’s Agenda Given the partial sum of a geometric series, find the specific n th term Find partial sums of arithmetic and geometric series 1.Do Now Due Tomorrow: HW #33 Page 661 #23 – 28 Page 659 #6 Page 660 # Summary 3.Work Time

SWBAT… Given the term value of a geometric sequence, find the specific n th term Find partial sums of arithmetic and geometric series Explicit formula for Geometric Sequence If we know that one of the terms has the value , how could you find what term number it is? Let’s do an example: t 1 = 15 and r = 3 Explicit formula:

SWBAT… Given the term value of a geometric sequence, find the specific n th term Find partial sums of arithmetic and geometric series Find a term number of a geometric sequence

SWBAT… Given the term value of a geometric sequence, find the specific n th term Find partial sums of arithmetic and geometric series Explicit Formula for n th Partial Sum of Geometric Series If we know that a partial sum is , how could you find what n is? Let’s use our example wheret 1 = 15 and r = 3

Find n Given a Partial Sum of a Geometric Series