Question

Find the first five terms of each geometric sequence described A1=1 R=4

Answer 1

$\bf n^{th}\textit{ term of a geometric sequence} \\\\\\ a_n=a_1\cdot r^{n-1}\qquad \begin{cases} r=\textit{common ratio}\\ a_1=\textit{first term}\\ -------\\ a_1=1\\ r=4 \end{cases}\\\\ -----------------------------$

$\bf \begin{array}{ccllll} term&value\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 1&a_1=1\\ 2&a_2=a_1\cdot 4^{2-1}\\ 3&a_3=a_1\cdot 4^{3-1}\\ 4&a_4=a_1\cdot 4^{4-1}\\ 5&a_5=a_1\cdot 4^{5-1}\\ \end{array}$