Question

I need to find S25 for 1/2 +1+ 3/2 + 2+...

Answer 1

if x=1/2
then, (1/2)+5(25-1)=a25? @SolomonZelman

Answer 2

in this case it is not
(1/2)+\(\large\color{red}{ \rm 5}\)(25-1)

but

½+½(25-1)=a25 (when looking for 25th term of course )

Answer 3

You already asked this question; by the way .