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irr_conic

irr_conic(F)
:: 三元二次形式Fが で既約かどうかを判定する。
return
文字列
F
変数x,y,z の二次の斉次多項式
[1] irr_conic(x^2+y^2+z^2-x*y-y*z-z*x);
reducible
[2] fctr(x^2+y^2+z^2-x*y-y*z-z*x);
[[1,1],[x^2+(-y-z)*x+y^2-z*y+z^2,1]]


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