Question

If a1=6 and an=an-1 -2

Answer 1

a₄ = 0

Explanation:

using the recursive rule
`a_(n)` =
`a_(n-1)` - 2 and a₁ = 6 , then

a₂ = a₁ - 2 = 6 - 2 = 4

a₃ = a₂ - 2 = 4 - 2 = 2

a₄ = a₃ - 2 = 2 - 2 = 0