[โ€“] 4 points 3 months ago

Not a mathematician but here's my guess:

spoilerThe question assumes you can just cancel out all the values on the right side. However, by summing the first three terms we see: 1 + 1 + 1 = 1 + (-1) + 2 + (-2) + 3 3 = 3

This continues as the numbers get bigger and bigger, so no matter how large the sum of the ones on the LHS is, there will always be it's equivalent on the RHS to equal it, after the previous values are cancelled out.

Not sure how to prove rigorously, infinities always confuse me a bit when it comes to what is and isn't allowed.

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  • [โ€“] 11 points 5 months ago

    Honestly, I think most DVD players have them these days. For that matter, many TVs also have a USB port on the back which supports playback, but that varies a lot more between models.

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