[微積] 一個微分問題

看板Math作者 (ytyt)時間12年前 (2013/10/16 18:15), 編輯推噓0(002)
留言2則, 1人參與, 最新討論串2/3 (看更多)
Suppose f is a function that satifies the equation f(x+y)=f(x)+f(y)+x平方y+xy平方 for all real numbers x and y.Suppose also that lim f(x)/x =1 find f'(x) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.45.54.193

10/16 18:18, , 1F
照定義做就可以了
10/16 18:18, 1F

10/16 18:18, , 2F
f'(x) = lim [ f(x+h) - f(x) ] / h as h→0
10/16 18:18, 2F
文章代碼(AID): #1INcTG85 (Math)
文章代碼(AID): #1INcTG85 (Math)