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when toggle format what by license comment
Oct 10, 2020 at 19:28 history edited darkl CC BY-SA 4.0
added 12 characters in body
Oct 10, 2020 at 17:04 comment added Max Lonysa Muller Thank you. If we do the elementary algebra, we find this amounts to $-1$ as well, when $s=0$.
Oct 10, 2020 at 16:18 history answered darkl CC BY-SA 4.0