Finding the rule for a sequence with alternating powers

The video tutorial explains how to derive a formula for a sequence with alternating signs. It begins by identifying the pattern of alternating positive and negative signs and discusses the initial formula of (-1) raised to the power of n. The instructor then adjusts the formula to ensure the first term is positive by using (-1) raised to the power of n+1. The tutorial also covers how to maintain a constant value of one in the sequence, regardless of the term number. Finally, the rule is finalized, ensuring the sequence alternates correctly between positive and negative values.

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