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第1个回答 2017-12-08
x=1+t^2
dx/dt = 2t
y=t^3
dy/dt = 3t^2
dy/dx = (dy/dt)/(dx/dt) = 3t/2
dy/dx|t=1 = 3/2本回答被网友采纳
dx/dt = 2t
y=t^3
dy/dt = 3t^2
dy/dx = (dy/dt)/(dx/dt) = 3t/2
dy/dx|t=1 = 3/2本回答被网友采纳