Question

I have a question #20



please help!!!!,,
find \[\sum_{n=1}^{\infty}[\frac{\sin (n pi-\frac{pi}{2})+(-1)^{n+1}}{(-1)^{n+3}*5}]^n\]

Answer 1

NnnnooOOO Mr.Bank. :( @FoolForMath

Answer 2

heyy, what's it ishaan??... long time no see though

Answer 3

srry I made a little mistake on the problem, now i've correct it
1.0
2.1/4
3.5/4
4.2/3
5.5/3

Answer 4

3.5/4

Answer 5

pls share your solution...