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6.3.12 diff

diff(rat[,varn]*)
diff(rat,varlist)
:: ratvarn あるいは varlist の中の変数で順次微分する.

return
rat
有理式 (初等函数を含んでもよい)
varn
不定元
varlist
不定元のリスト

 
[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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