Question

reposta urgente por favor

Answer 1

Solução passo a passo:

   $a_{_1} = 0 \\\\\\ a_{_{1+1}} = \frac{a_{_1} +1}3{} \\\\ a_{_2} = \frac{0+1}{3} \\\\ a_{_2} = \frac{1}{3} \\\\\\ a_{_{2+1}} = \frac{a_{_2} +1}3} \\\\ a_{_3} = \frac{\frac{1}{3}+1}{3} \\\\ a_{_3} = \frac{\frac{4}{3}}{3} \\\\ a_{_3} = \frac{4}{9} \\\\\\ a_{_{3+1}} = \frac{a_{_3} +1}3} \\\\ a_{_4} = \frac{\frac{4}{9}+1}{3} \\\\ a_{_4} = \frac{\frac{13}{9}}{3} \\\\ a_{_4} = \frac{13}{27}$
   
   
   $a_{_{4+1}} = \frac{a_{_4} +1}3} \\\\ a_{_5} = \frac{\frac{13}{27}+1}{3} \\\\ a_{_5} = \frac{\frac{40}{27}}{3} \\\\ a_{_5} = \frac{40}{81}$