Question

escreva o termo geral da sequência

(4, 7, 10, 13...)​

Answer 1

$(a_1,a_2,a_3,a_4,\dots)=(4,7,10,13,\dots)\\\\ \boxed{a_n=a_k+(n-k)r}\ \therefore\ a_2=a_1+r\ \therefore\ 7=4+r\ \therefore\ \boxed{r=3}\\\\ a_n=a_1+(n-1)r\ \therefore\ a_n=4+(n-1)(3)\ \therefore\\\\ a_n=4+3n-3\ \therefore\ \boxed{a_n=3n+1}$