Question

This is the question... please help

Answer 1

see below

since....

x1 = 1 & x2 = 2 we have....

x1 • x2 • x3 = 1

1 • 2 • x3 = 1

x3 = 1/2

again....

x2 • x3 • x4 = 1

2 • 1/2 • x4 = 1

x4 = 1

and also...

x3 • x4 • x5 = 1

1/2 • 1 • x5 = 1

x5 = 2

x4 • x5 • x6 = 1

1 • 2 • x6 = 1

x6 = 1/2

therefore.....

{ xn } = { 1, 2, 1/2, 1, 2, 1/2, 1.........}

means......

{ xn } = { 1, 2, 1/2, }

hence......

{ xn } is a oscillatory sequence