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Mr.Anubis
Mr.Anubis
18:38
Hi , Thanks for coming
lab bhattacharjee
lab bhattacharjee
Welcome.
I think there must be some type error with the bracket
Mr.Anubis
Mr.Anubis
I wonder , how did you find the summation of 3^n ?
I am quite idiot in maths , so please endure me somehow xD
and the summation range is was confusing too
lab bhattacharjee
lab bhattacharjee
Are you aware of Geometric Series?
Mr.Anubis
Mr.Anubis
awfully yes :)
lab bhattacharjee
lab bhattacharjee
Geometric progression?
Mr.Anubis
Mr.Anubis
18:41
yes!
I know where you're reaching but your summation range was eluding me
lab bhattacharjee
lab bhattacharjee
You are talking about $1\le r\le 3^r?$
Mr.Anubis
Mr.Anubis
yes
lab bhattacharjee
lab bhattacharjee
I made two typo there
which are rectified now
Mr.Anubis
Mr.Anubis
but why did you multiply summation of 3^n with 3 inside the bracket if you see your answer
lab bhattacharjee
lab bhattacharjee
As the 1st term is 3
Mr.Anubis
Mr.Anubis
18:46
ohh my ,how could I overlook that fact
lab bhattacharjee
lab bhattacharjee
The easiest way to to validate the sum is to replace n with 1,2,3 etc.
Mr.Anubis
Mr.Anubis
Thanks for killing the confusion :)
lab bhattacharjee
lab bhattacharjee
If you are ok, I may go to bed
If 00:25 AM
Mr.Anubis
Mr.Anubis
ofcourse , good night , Thanks again)
lab bhattacharjee
lab bhattacharjee
welcome
enjoy mathematics

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