Question 12 of 27 Find a formula $a_n$ for the $n$-th term of the following seq $\frac{1}{1}, -\frac{1}{8}, \frac{1}{27}, \dots$ (Use symbolic notation and fractions where needed.)
Added by Cameron D.
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Step 1
We need to find a formula for the $n$-th term, $a_n$. Let's analyze the terms: First term ($n=1$): $a_1 = \frac{1}{1}$ Second term ($n=2$): $a_2 = -\frac{1}{8}$ Third term ($n=3$): $a_3 = \frac{1}{27}$ Step 2: Analyze the denominators. The denominators are $1, Show more…
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