Question

Qual é o centésimo termo da P.A. (2,5,...)

Answer 1

$a_1 = 2 \\ r = 3 \\ a_{100} = \,? \\ \\ a_n = a_1 + (n-1)r \\ \\ a_{100} = 2+(100-1).3 \\ \\ a_{100} = 2 + 99.3 \\ \\ a_{100} = 2 + 297 \\ \\ a_{100} = 299$