设 {x=2t^3+2 y=e^2t-1 ,求dy/dx,d^2y/dx^2
设函数y=y(x)由x=1-e^t和y=t+e^-t确定,求dy/dx和d^2y/dx^2
设 {x=2t^3+2 y=e^2t-1 ,求dy/dx,d^2y/dx^2
设x=e^-t y=e^-2t 求dy/dx
设x=3e^-t,y=2e^t,则dy/dx等于多少?
设x=1+t^2、y=cost 求 dy/dx 和d^2y/dx^2 sint-tcost/4t^3 和 sint-tc
已知参数方程x=e^(2t)-1,y=2e^t,求dy/dx,d^2y/dx^2
急设x=2t^(2)-1,y=根号(1+t^2).求dy/dx和d^2y/dx^2
x=2t+cost y=t+e^t 求dy/dx
y=2e的2x次方 和设x=te的t次方,y=t的平方e的t次方,求dy/dx和d的平方y/dx的平方
设x=t+arctan t+1,y=t的立方+6t-2,求dy/dx
设x=t^2+cost,y=1-sint,求dy/dx
已知 x=e^t ,dy/dx=dy/xdt .分析变换具体步骤 d^2y/dx^2=(d^2y/dt^2-dy/dt)