- #1

Puppy27

- 4

- 0

[tex]\sum [/tex] 1/ [(k^x) * (2^k)] (k=1 to [tex]\infty[/tex])

Using ratio test, I 've got

[(1/2) * 1^x] < 1 for all x in R

But when I use different value of x, series converge and diverge!!

Really need your help! Thank you so much