设y=sin(x y),求d²y/dx²

设y=sin(x y),求d²y/dx² 设函数y=sin(2x²+1),求dy/dx,d²y/dx² 设f(x)可导,求dy/dx y=sin f(x²) 设sin(x+y)=xy,求dy/dx. 设y=sinx²+sin²x,求y' 设x=1+t²、y=cost 求 dy/dx 和 d²y/d x² 设x=1+t²、y=cost 求 dy/dx 和 d²y/d x². y是x 的隐函数的导数,1）、xy-e^x+e^y=1,求y' .2)设y=sin(x+y),求dy/dx,d^2y/d 设y=x+lnx,(x>0),则d²y/dx²= 过程 求设方程y=sin(x+y)确定了y是x的函数,求dy/dx 设y=y(x)由方程x^2-sin(xy)=2y确定,求dy/dx 设方程y=sin(x+y)确定了y是x的函数,求dy/dx.