diff

diff(rat[,varn]*)

diff(rat,varlist)

:: rat ¤ò varn ¤¢¤ë¤¤¤Ï varlist ¤ÎÃæ¤ÎÊÑ¿ô¤Ç½ç¼¡Èùʬ¤¹¤ë.

return

¼°

rat

Í­Íý¼° (½éÅùÈ¡¿ô¤ò´Þ¤ó¤Ç¤â¤è¤¤)

varn

ÉÔÄ긵

varlist

ÉÔÄ긵¤Î¥ê¥¹¥È

• Í¿¤¨¤é¤ì¤¿½éÅùÈ¡¿ô¤ò varn ¤¢¤ë¤¤¤Ï varlist ¤ÎÃæ¤ÎÊÑ¿ô¤Ç ½ç¼¡Èùʬ¤¹¤ë.
• º¸Â¦¤ÎÉÔÄ긵¤è¤ê, ½ç¤ËÈùʬ¤·¤Æ¤¤¤¯. ¤Ä¤Þ¤ê, diff(rat,x,y) ¤Ï, diff(diff(rat,x),y) ¤ÈƱ¤¸¤Ç¤¢¤ë.

[0] diff((x+2*y)^2,x);  
2*x+4*y
[1] diff((x+2*y)^2,x,y);
4
[2] diff(x/sin(log(x)+1),x);
(sin(log(x)+1)-cos(log(x)+1))/(sin(log(x)+1)^2)
[3] diff(sin(x),[x,x,x,x]);
sin(x)

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