×

# 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
3 months, 4 weeks ago

Sort by:

So what is the correct question? · 3 months, 4 weeks ago

Find the Cesaro sum of $$1-1+1-1+1-1+\cdots$$. · 3 months, 3 weeks ago

Ok · 3 months, 4 weeks ago

What is meaning that the series will diverge? · 3 months, 4 weeks ago

The partial sum of the series does not converge to any fixed number. · 3 months, 4 weeks ago

You need to specify that you're using Cesaro sum, otherwise, the series diverge. · 3 months, 4 weeks ago