设函数y=y(x)由x=2t+|t|,y=5t^2+4t|t|,求dy
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
设函数y=y(x)由参数方程x=cos t,y=sin t - t cos t确定,求dy/dx
设参数方程{x=(2+t^2),y=t.确定了函数y(x).求dy/dx?
设函数y=y(x)由方程x^2+5xt+4t^3=0 e^y+y(t-1)+lnt=1;求x=1时 dy\ dx
设x=t+arctan t+1,y=t的立方+6t-2,求dy/dx
求由参数方程x=1-t^2 y=t-t^2确定的函数y=y(x)的导数dy/dx
请高手赐教:设由参数方程:x=t-arctant;y=ln(1+t^2) 确定y是x的函数,求dy/dx.
y=y(x)由参数方程x=2t/(1+t^);y=(1-t^2)/1+t^2确定,求dy/dx
设x=e^-t y=e^-2t 求dy/dx
设参数方程 x=∫(1,t) ulnudu y=∫(1,t) u^2lnudu 确定了函数 y=y(x) 求dy/dx
x=t^2+t y=ln(1+t) 求dy/dx
x=2t+cost y=t+e^t 求dy/dx