Question

Geometric Sequence: a^1 = 1000 r=2/5

Find explicit expression for A of N, the term number.

Answer 1

\(\Large {
a_{\color{brown}{ n}}=a_1\cdot r^{{\color{brown}{ n}}-1}\quad
\begin{cases}
a_1\to 1^{st}\ term\to 1,000\\
{\color{brown}{ n}}\to n^{th}\ term\to \frac{2}{5}
\end{cases}
}\)

Answer 2

Thank you so much! you are whats right in this world :)