Question

find limit superior n infirior for following sequences
, ,<3Yn> where Xn= {4,5,-6,7,4,5,-6,7....} Yn= {0,1,3,5,0,1,3,5.....}

Answer 1

I don't quite understand your question, are you supposed to find max(<Xn+Yn>) and min(<Xn+Yn>) ?

Answer 2

yes,also for <XnYn> and <3Yn>

Answer 3

Ok, so all we need to do is find the first 4 terms of each sequence.
<Xn+Yn> = {4,6,-3,12,.....}
<Xn.Yn> = {0,5,-18,35,....}
<3Yn> = {0,3,9,15......}
Now can you identify the max and min in each sequence ?

Answer 4

how did you do that? just added n multiplied?

Answer 5

Yep !

Answer 6

hah...