设x=f(t)?πy=f(e3t?1),其中f可导,且f′(0)≠0,则dydx|t=0=1313

2025-03-10 22:30:00
推荐回答(1个)
回答1:

dx
dt
=f′(t)
dy
dt
=3e3tf′(e3t?1)

dy
dx
|t=0
dy
dt
dx
dt
|t=0
=
f′(0)
3f′(0)
1
3