Which represents the series 1+1/3+1/9+1/27 using sigma notation?
I will post the choices in a bit.. I think it is either option c or d... :/

Question

Which represents the series  1+1/3+1/9+1/27 using sigma notation?
I will post the choices in a bit.. I think it is either option c or d... :/

anonymous · Answer

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anonymous · Answer

OMG! @ParthKohli you are actually the best! you're like a hero coming to the rescue! thanks for coming again! so so sorry to bug you yet again! But I am sooo lost! :(

parthkohli · Answer

Hmm I see that it is Option D.

parthkohli · Answer

For the first term, we have 1 right, and i = 1, so we'll raise 1/3 to the power 1-1 = 0. That'll bring 1.

anonymous · Answer

oh thanks! so the answer is option d then @ParthKohli ??

parthkohli · Answer

Same applies to i = 2

parthkohli · Answer

Yes.

anonymous · Answer

Yay thank you soooo sooo much!! :) When you are going to go offline, can you please message me to let me know?? I hope it's not going to be soon though! ;P Thank you for helping me!!! :D

parthkohli · Answer

If we see the 2nd one, we'll raise 1/3 to (2 - 1) power, i.e 1st power

parthkohli · Answer

I'm not sure about the time

anonymous · Answer

oh okay, thanks so much @ParthKohli i'll be posting another one soon so if you are not busy, i'd really appreciate your help! :)

parthkohli · Answer

hmm sure