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Happy New 2020 Year!
(one Mathcad plot from Inna Vasileva)
Nice! Maybe you could add the worksheet.
Happy New Year to all of you, too!
P.S.: The star would be prettier in gold, but I understand that the soviet star must be red colored 😉
https://en.wikipedia.org/wiki/Red_star#/media/File:Volokolamsk_(Moscow_Oblast)_12.jpg
