Question

Find the value of c if \[\sum_{n=2}^{\infty} 4(1+c)^{-n}=2\]

Answer 1

\[\sum_{n=2}^{\infty} 4(1+c)^{-n}=2\]

Answer 2

you can use binomial theorem....i think!! :D

Answer 3

how would you apply that?

Answer 4

any information bout c?

Answer 5

u can use geometric series? i think