Question

PLZ help
A sequence {an} is defined recursively, with a1 = -1, and, for n > 1, an = an-1 + (-1)n. Find the first five terms of the sequence.
A)
-1, 0, 1, 2, 3
B)
-1, -2, -3, -4, -5
C)
-1, 0, -1, 0, -1
D)
-1, 1, -1, 1, -1

Answer 1

\[a1 = -1, and, n > 1, an = an-1 + (-1)n.\]

Answer 2

plz help @satellite73