已知x=ln√1+t^2,求dx /d(1/t).
已知x=ln√1+t^2,求dx /d(1/t).
设参数函数x=ln(1+t^2),y=t-arctant.求(d^2y)/(dx^2).
x=ln(1+t^2),y=t-arctant 求d^2y/dx^2的导数,
x=t^2+t y=ln(1+t) 求dy/dx
设x=ln(1+t²) y=t-arctant 求dy/dx d²y/dx²
设{x=ln√(1+t^2),y=arctant,求 dy/dx及d^2·y/d·x^2
方程组 x=ln√1+t^2 y=arctant 求 dy/dx
求函数的二阶导数d平方y/dx平方.(1)x=1-(t平方),y=t-(t三次方); (2)x=ln(1+t平方),y=
=ln(1+t^2),y=arctant 求d²y/dx²的时候d/dt*(dy/dx)=-(1/2
已知x=ln(1+t
x=ln(1+t^2),y=arctant+π 求dy/dx和d2y/dx2
X=arctant,y=ln(1+t^2),y=y(X),求d^2y/dX^2(即求y的二阶导数)