作者king911015 (早已放棄愛上你)
看板trans_math
標題[微分]
時間Tue Jan 23 19:52:25 2007
Given x= t+e^t, y=t+t^2, find the value of d^2y/dx^2 when t=0.
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.175.77.245
→ unog:x和y都是t的函數, 題目要求y對x微分,那x還必 61.62.121.187 01/23 20:10
→ unog:須對誰來微分? chain rule 61.62.121.187 01/23 20:12