Given: an=3an-1+2 ; where a2=8 Required: First three terms of the sequence - a1, a2, a3 Solution:
You need to work back to get a1 since the given is a2. To work back, minus 2 from 8 first before dividing the number by 3. a1 = 8 - 2 a1 = 6 / 3 a1 = 2
In getting a3, multiply the given 8 by 3 then add 2. an=3an-1+2 : a3=3(8)+2 a3 = 8 x 3 a3 = 24 + 2 a3 = 26
