Question: A geometric sequence, In , is given by In = -3(2)-1. Show that the sum of the first n terms, S,, is given by S,.

A geometric sequence, In , is given by In =
A geometric sequence, In , is given by In = -3(2)"-1. Show that the sum of the first n terms, S,, is given by S,. = 3(1 - 2")

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