(x^2+1)dy/dx+2xy=4x^2

求方程(x*x+1)dy/dx+2xy=4x*x的通解. dy/dx=1+x+y^2+xy^2 (1-x^2)dy/dx+xy=1 解方程dy/dx+2xy=4x... x^2+xy+y^3=1,求dy/dx differential equation:x^2 dy/dx + xy = 1 (x^2+1)dy/dx+2xy=4x^2 dy/dx=(x+1)^2+(4y+1)^2+8xy+1 求通解 求解微分方程 x^2*dy/dx=xy-y^2 求齐次微分方程dy/dx=y^2/xy-x^2 dy/dx=xy/x^2-y^2 求通解:(xy-x^2)dy=y^2dx 已知sin(xy)=x^2,求 dy/dx= 求微分方程dy/dx+2xy=3x dy/dx + 2xy =x 的通解 微分方程求解 (x^2y^3+xy)dy=dx 解微分方程 (x^2y^3+xy)dy=dx siny+e^x-xy^2=0,求dy/dx