Writeanequationtodescribethesequencebelow.Usentorepresentthepositionofaterminthesequence,wheren = 1forthefirstterm.

Question

–28 , 56 , –112 , ...

Write your answer using decimals and integers.

an =
(
)n - 1

Answer 1

an = (-1)^n * 28 * 2^n