已知参数方程x=e^(2t)-1,y=2e^t,求dy/dx,d^2y/dx^2
已知参数方程x=e^(2t)-1,y=2e^t,求dy/dx,d^2y/dx^2
参数方程x=(t-1)e^t,y=1-t^4,求dy/dx
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
y=1+xe^y,求dy/dx.参数方程x=e^-t,y=3t,求dy/dx.求∫1/x+x².
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)
设x=e^-t y=e^-2t 求dy/dx
参数方程:x=5(t-sint) y=5(1-cost) 求d^2y/dx^2 dy/dx我会求
已知参数方程x=t+t^2,y=cost.求导数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
证明x^2(d^2y/dx^2)+a_1x(dy/dx)+a_2y=0 ,令x=e^t,方程可化成d^2y/dt^2+(
高数题设x=(t+1)e^t,y=t^2*e^t,求d^2y/dx^2