Mistakes of infinity

One of my question has been reported by someone & i can't respond to it because it shows some problem is there.

I want to share my answer here, The question was to find 2S where S=1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+......... My answer was 2S=1. For more you can see grandi series.

Note by Vijayant Patel
1 year, 1 month ago

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So what is the correct question?

- 1 year, 1 month ago

Find the Cesaro sum of $$1-1+1-1+1-1+\cdots$$.

- 1 year, 1 month ago

Ok

- 1 year, 1 month ago

What is meaning that the series will diverge?

- 1 year, 1 month ago

The partial sum of the series does not converge to any fixed number.

- 1 year, 1 month ago

You need to specify that you're using Cesaro sum, otherwise, the series diverge.

- 1 year, 1 month ago