设x=e^-t y=e^-2t 求dy/dx
设x=e^-t y=e^-2t 求dy/dx
设x=e'sin t,y=e'cos t,求dy/dx.
设x=3e^-t,y=2e^t,则dy/dx等于多少?
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
x=2t+cost y=t+e^t 求dy/dx
设 {x=2t^3+2 y=e^2t-1 ,求dy/dx,d^2y/dx^2
参数方程x=(t-1)e^t,y=1-t^4,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
【数学】求导设y=y(x)由{x=arctant,2y-ty^2+e^t =5 }确定,求dy/dx
已知参数方程x=e^(2t)-1,y=2e^t,求dy/dx,d^2y/dx^2
y=1+xe^y,求dy/dx.参数方程x=e^-t,y=3t,求dy/dx.求∫1/x+x².
高数求导数y=e^ty+x,t^2+y^2-x^2=1,求dy/dx