TOPOLOGICAL STRUCTURE OF INTEGRAL CURVES OF THE DIFFERENTIAL EQUATION (dy)/(dx)=(ax~3+bx~2y+cxy~2+dy~3)/(a_1x_3+b_1x~2y+c_1xy~2+d_1y~3)

 
  • 微分方程(dy)/(dx)=(ax~3+bx~2y+cxy~2+dy~3)/(a_1x~3+b_1x~2y+c_1xy~2+d_1y~3)的積分曲線(xiàn)的拓撲結構
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