x=f(t)-a y=f(e^3t -1),求Y对X的导数.
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x=f(t)-a y=f(e^3t -1),求Y对X的导数.
x=f(t)-a y=f(e^3t -1),求Y对X的导数.
x=f(t)-a y=f(e^3t -1),求Y对X的导数.
dy/dt=f'[e^(3t)-1]*e^(3t)*3
dx/dt=f'(t)
故dy/dx=(dy/dt)/(dx/dt)=3e^(3t)f'[e^(3t)-1]/f'(t)