Question

Write a stigma notation for this series:
(1/3)+(1/6)+(1/9)+(1/12)+....

Answer 1

the series is reciprocal of 3's multiples is'n it?

Answer 2

so u can write it like\[\frac{ 1 }{ 3 }+\frac{ 1 }{ 3 \times 2 }+\frac{ 1 }{ 3 \times 3 }+\frac{ 1 }{ 3 \times 4 }+.......+\frac{ 1 }{ 3 \times ~n }\]

Answer 3

ok?

Answer 4

oh ok thanks for your help

Answer 5

finally u can write it as\[\Large \sum_{n=1}^{\infty}\frac{ 1 }{ 3n }\]

Answer 6

:)