Answer
A: 128
B: 7
C: 2
D: -256
Work Step by Step
replace n with 8.
A.
$a_8 = 2^{8-1} = 128$
B.
$a_8 = 7$
C.
$a_8 = 1 + (-1)^8 = 2$
D.
$a_8 = -(-2)^8 = -256$
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 2 - Section 2.4 - Sequences and Summations - Exercises - Page 167: 2
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