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2Â¥2020-07-17 07:54:32
jpchou
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×Ô¼ºŒ‘³Ìʽȥ®aÉú MS ‘ª®”ÊÇÞk²»µ½µÄ º††Î google һϣ¬¾Í•þ¿´µ½ÓÐÒ»‚€¾W퓸úÄãÕfÃ÷ÒªÈçºÎŒ‘ ÏÂÃæÊÇ Mathematica code (from a website somewhere) angles = {0}; For[q = 0, q <= 150, q++, For[r = 0, r <= Abs[q], r++, For[s = q, s <= q + 5, s++, For[sign = -1, sign <= 1, sign = sign + 2, t = 1/2 (s - sign*Sqrt[4 q^2 - 4 q r + 4 r^2 - 3 s^2]); If[Abs[t - Round[t]] < 0.001 && Abs[q] != Abs[r], kosin = (q*s + r*t - (q*t + s*r)/2)/(q*q + r*r - q*r); angle = 180./Pi*ArcCos[kosin]; If[angle < 2 && angle != 0, Print[{q, r, s, t, angle}]; angles = angles~Join~{angle},],]; ]; ]; ]; ]; |
3Â¥2020-07-19 13:01:41









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