Is the limit of the sum of n terms of geometric series.

a 1=4/3

q=2/3

The limit of the preceding sum is a 1/( 1-q)=4.

So the value of this stage is 4.

I don't understand.

Satisfied, please adopt.

If you have any other questions, please ask them after adopting this question.

It is not easy to answer the question, please cooperate with O(∩_∩)O~

I wish you progress in your study.