求导数 x=3t²+2t+3 y=e^y*sint+t 求 dy/dx
设x=1+t^2、y=cost 求 dy/dx 和d^2y/dx^2 sint-tcost/4t^3 和 sint-tc
高数求导数y=e^ty+x,t^2+y^2-x^2=1,求dy/dx
x=(e^t)sint y=(e^t)cost 求d^2y/dx^2
参数方程求导 x=a(t-sint) y=a(1-cost) 求dy/dx 各种不会 求解决
x=2t^2 +1 y= sint 求dy/dx是多少?
设x=t^2+cost,y=1-sint,求dy/dx
设x=3e^-t,y=2e^t,则dy/dx等于多少?
x=2t+cost y=t+e^t 求dy/dx
如果 x=根号(1-t平方),y=1/sint, 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x=ln(1+t²) y=t-arctant 求dy/dx d²y/dx²
设x=e^-t y=e^-2t 求dy/dx