已知 x = e^t * cos t y = e^t *sin t 求当t= π/3时dy/dx的值
已知 x = e^t * cos t y = e^t *sin t 求当t= π/3时dy/dx的值
已知 x = e^t * sin t y = e^t * cos t 求当t= 60度时dy/dx的值,即对x的一介导数
设x=e'sin t,y=e'cos t,求dy/dx.
x=2t+cost y=t+e^t 求dy/dx
参数方程x=(t-1)e^t,y=1-t^4,求dy/dx
求导:x=cos^4*t,y=sin^4*t,求dy/dx
设x=a cos的3次方t y=a sin的3次方t求dy/dx
设x=e^-t y=e^-2t 求dy/dx
设x=3e^-t,y=2e^t,则dy/dx等于多少?
设函数y=y(x)由参数方程x=cos t,y=sin t - t cos t确定,求dy/dx
y=1+xe^y,求dy/dx.参数方程x=e^-t,y=3t,求dy/dx.求∫1/x+x².
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