作者king911015 (早已放弃爱上你)
看板trans_math
标题[微分]
时间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.
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1F：→ unog:x和y都是t的函数, 题目要求y对x微分,那x还必 61.62.121.187 01/23 20:10
2F：→ unog:须对谁来微分? chain rule 61.62.121.187 01/23 20:12