Formula: spring festival couplet
Description
In [Taiwan](Https://Www.Google.Com.Tw/Maps?Q=Taiwan&Biw=1707&Bih=817&Dpr=1.13&Um=1&Ie=Utf-8&Sa=X&Ved=0Ahukewjq1E2Jwzlvahveu7Wkha_Xcwkq_Auicygc), `春` Means Spring And We Hang Couplets With The Word Around The House During The Lunar New Year. Try To Search Google For The Following Formula: X^4+Y^4+100/(X^4+(2Y-2)^4+(2Y-1)^2)+100/(X^4+(2Y+2)^4+(2Y+1)^2)-1/((Y+3)^4+(X/15)^4)-1/((Y+4)^4+(X/15)^4)-1/((Y+5)^4+(X/15)^4)-1/(4(X+Y+4)^4+((X-Y+1)/5)^4)-100^16/(((X-4)^2+(Y+5)^2-13)^2+((X-19)^2+(Y+12)^2-400)^2)^16-25 I Found This Amazing Formula On "[如何用方程式寫春聯](Http://Pansci.Asia/Archives/75693)" And Tried To Made An Printable Version. The Function In Openscad Is: Function F(X, Y) = Pow(X, 4) + Pow(Y, 4) + 100 / (Pow(X, 4) + Pow(2 * Y - 2, 4) + Pow(2 * Y - 1, 2)) + 100 / (Pow(X, 4) + Pow(2 * Y + 2, 4) + Pow(2 * Y + 1, 2)) - 1 / (Pow(Y + 3, 4) + Pow(X / 15, 4)) - 1 / (Pow(Y + 4, 4) + Pow(X / 15, 4)) - 1 / (Pow(Y + 5, 4) + Pow(X / 15, 4)) - 1 / (4 * Pow((X + Y + 4), 4) + Pow((X - Y + 1) / 5, 4)) - Pow(100, 16) / Pow((Pow(Pow(X - 4, 2) + Pow(Y + 5, 2) - 13, 2) + Pow(Pow(X - 19, 2) + Pow(Y + 12, 2) - 400, 2)), 16) - 25;
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