Respuestas

2012-09-13T23:55:50+02:00

An= {3, 6, 9, 12 ...}

a1=3

r=6-3=3

an=3+(n-1)*3=3n

 

Bn= { 2/3, 1, 4/3, 5/3...}

a1=2/3

r=1-2/3=1/3

an=2/3+(n-1)*1/3

an=(n+1)/3