The steps for finding the n th partial sum are: Step 1: Identify a and r in the geometric series. Step 2: Substitute a and r into the formula for the n th partial sum that we derived above.
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How to find the formula for the nth partial sum of any series - Quora Answer: Take a GP S(n)= a(1)+a(2)+ a(n). Eq1 Let the common ratio be r Then a(n)= a×r^(n-1) Multiply both sides of Eq1
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Finding a Formula for a Partial Sum of a Telescoping Series. To evaluate a telescoping series, one typically finds an expression for a partial sum, and then takes the limit of this