Question

Write the first four terms of the sequence if A1 equals 486 and a n equal 1/3 a n -1

Answer 1

`\bf \begin{array} \cline{1-2} \stackrel{a_n}{term}\qquad &\stackrel{\left( (1)/(3) \right)a_(n-1)}{value}\\ \cline{1-2} a_1&486\\&\\ a_2&\left( (1)/(3) \right)a_(2-1)\\&\\ &\left( (1)/(3) \right)a_(1)\\&\\ &\left( (1)/(3) \right)486\\&\\ &162\\&\\ a_3&\left( (1)/(3) \right)a_(3-1)\\&\\ &\left( (1)/(3) \right)a_(2)\\&\\ &54\\&\\ a_4&\left( (1)/(3) \right)a_(3)\\&\\ &18 &\\ \cline{1-2} \end{array}`