Re: [微積] 泰勒展開

看板Math作者 (Paul)時間13年前 (2012/05/02 22:48), 編輯推噓0(002)
留言2則, 1人參與, 最新討論串4/8 (看更多)
※ 引述《suhorng ( )》之銘言: -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.115.145.87

05/02 20:17,
怎麼證明兩式相除是泰勒展開式而不是其他的逼近式呢
05/02 20:17
If there are two different power series P(x), Q(x) approaching to f(x) then |P(x)-Q(x)| <= |P(x)-f(x)| + |Q(x)-f(x)|→0 hence P(u)-Q(u)=0 for ALL u in the convergent interval then P(x)=Q(x) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 27.147.57.77

05/03 01:16, , 1F
f(x) = Σan x^n = Σ bn x^n => n!an = n!bn
05/03 01:16, 1F

05/03 01:17, , 2F
=f的n階導數代x=0 => an = bn好像就可以了??
05/03 01:17, 2F
文章代碼(AID): #1FeKajrN (Math)
文章代碼(AID): #1FeKajrN (Math)