| Sequence | \(nth\) term |
|---|---|
| \((a) \, \, e, \dfrac{e^{2}}{2},\dfrac{e^{3}}{3},\ldots\) | \(a_{n}=\dfrac{e^{n}}{n}\) |
| \((b) \, \, 1,\dfrac{1}{3},\,\dfrac{1}{9},\,\dfrac{1}{27},\ldots\) | \(b_{n}=\left( \dfrac{1}{3}\right) ^{n-1}\) |
| \((c) \, \, 1,\,4,\,9,\,16,\,25,\,\ldots\) | \(c_{n}=n^{2}\) |
| \((d) \, \, \dfrac{2}{2},\,\dfrac{4}{3}, \dfrac{6}{4}, \dfrac{8}{5},\,\ldots\) | \(d_{n}=\dfrac{2n}{n+1}\) |
| \((e) \, \, 1,\,-\dfrac{1}{2},\,\dfrac{1}{3},\,-\dfrac{1}{4},\,\dfrac{1}{5},\,\ldots\) | \(e_{n}=\dfrac{(-1)^{n+1}}{n}\) |
| \((f) \, \, 1,\,\dfrac{1}{2},\,1,\,\dfrac{1}{4},\,1,\,\dfrac{1}{6},\ldots\) | \(f_{n}=\left\{\begin{array}{lll} 1 &\hbox{if } n\hbox{ is odd} \\ \dfrac{1}{n} &\hbox{if } n\hbox{ is even} \end{array}\right. \) |