prim, cont

prim(poly[,v])

:: poly ¤Î¸¶»ÏŪÉôʬ (primitive part).

cont(poly[,v])

:: poly ¤ÎÍÆÎÌ (content).

return poly

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v

ÉÔÄ긵

• poly ¤Î¼çÊÑ¿ô (°ú¿ô v ¤¬¤¢¤ë¾ì¹ç¤Ë¤Ï v) ¤Ë´Ø¤¹¤ë¸¶»ÏŪÉôʬ, ÍÆÎ̤òµá¤á¤ë.

[0] E=(y-z)*(x+y)*(x-z)*(2*x-y);
(2*y-2*z)*x^3+(y^2-3*z*y+2*z^2)*x^2+(-y^3+z^2*y)*x+z*y^3-z^2*y^2
[1] prim(E);
2*x^3+(y-2*z)*x^2+(-y^2-z*y)*x+z*y^2
[2] cont(E);
y-z
[3] prim(E,z);
(y-z)*x-z*y+z^2

»²¾È

section var, section ord.

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