√ 2x/y^3dx y^2-3x^2/y^4dy=0 138612-2x/y^3dx+y^2-3x^2/y^4dy=0
De Ps Pdf Q Evaluate dy/dx from the equation 3xy^2 4 (y/x) (y5)/ (2x^2 1) = 11 when x = 1 A Given equation, 3xy24yxy52x21=11 Differentiate with respect to x Q In (y?分组得：y^2dy(3x^2dy2xydx)=0 注意到3x^2dy前面的3应该由y^3求导而来，故乘以y^2得： y^4dy(3x^2y^2dy2xy^3dx)=0,或：y^4dyd(x^2y^3) y=3^sinx,求dy/dx Y=e^2x sin^3x求dy 求方程e^y=xy确定的隐函数y=y(X)导数（e^y 1 2x/y^3dx+y^2-3x^2/y^4dy=0