Pa(3,6,9)
PA(3,6,9)
PA(2,8,14)
PA(1,3,5)
POR FAVOR
a(n)=a(k)+(n-k).r
a(20)=a(1)+(20-1).3
a(20)=3+19.3
a(20)= 60
Comments
a(n)=a(k)+(n-k).r
a(20)=a(1)+(20-1).3
a(20)=3+19.3
a(20)= 60