Question
Find a general term for the sequence whose first five terms are shown.$-5,10,-15,20,-25, \ldots$
Step 1
This can be represented by $(-1)^n$ or $(-1)^{n+1}$, depending on whether we start counting from $n=0$ or $n=1$. In this case, we start from $n=1$, so we use $(-1)^n$. Show more…
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