Question

1) determine o 12° termo da pá (2,5,8,...) fórmula:an=a1+(n-1).r​

Answer 1

$a_n=a_1+(n-1)\cdot r$

$a_{12}=2+(12-1)\cdot3$

$a_{12}=2+11\cdot3$

$a_{12}=2+ 33$

$\red{\boldsymbol{a_{12}=35 }}$