Question

If a1 = 6 and an
-5an-1 + 4 then find the value of a4.

Answer 1

9514 1404 393

Answer:

a4 = -666

Explanation:

Use the recursive definition repeatedly.

a1 = 6

a2 = -5(6) +4 = -26

a3 = -5(-26) +4 = 134

a4 = -5(134) +4 = -666