coef

coef(poly,deg[,var])

:: poly ¤Î var (¾Êά»þ¤Ï¼çÊÑ¿ô) ¤Ë´Ø¤¹¤ë deg ¼¡¤Î·¸¿ô.

return

¿¹à¼°

poly

¿¹à¼°

var

ÉÔÄ긵

deg

¼«Á³¿ô

• poly ¤Î var ¤Ë´Ø¤¹¤ë deg ¼¡¤Î·¸¿ô¤ò½ÐÎϤ¹¤ë.
• var ¤Ï, ¾Êά¤¹¤ë¤È¼çÊÑ¿ô var(poly) ¤À¤È¤ß¤Ê¤µ¤ì¤ë.
• var ¤¬¼çÊÑ¿ô¤Ç¤Ê¤¤»þ, var ¤¬¼çÊÑ¿ô¤Î¾ì¹ç¤ËÈæ³Ó¤·¤Æ ¸úΨ¤¬Íî¤Á¤ë.

[0] A = (x+y+z)^3;
x^3+(3*y+3*z)*x^2+(3*y^2+6*z*y+3*z^2)*x+y^3+3*z*y^2+3*z^2*y+z^3
[1] coef(A,1,y);
3*x^2+6*z*x+3*z^2
[2] coef(A,0);
y^3+3*z*y^2+3*z^2*y+z^3

»²¾È

section var, section deg, mindeg.

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