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Mathematics 7 Online
OpenStudy (anonymous):

Indicate a general term for this sequence. -0.1, +0.2, -0.3, +0.4, . . .

OpenStudy (unklerhaukus):

one tenth of the whole numbers times negative one to the power equal to the position in the sequence

OpenStudy (anonymous):

\[a _{n}=n(-1)^{n}/10\]

OpenStudy (unklerhaukus):

\[n\in\{1,2,3,...\}=\mathbb N^+ \]

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