{"type":"rich","version":"1.0","title":"Solution of an exact equation: level curves of its potential","html":"<span class=\"wb-embed wb-embed-math\" data-latex=\"F_x=M,\\qquad F_y=N\\ \\Longrightarrow\\ F(x,y)=C\">F_x=M,\\qquad F_y=N\\ \\Longrightarrow\\ F(x,y)=C</span>","width":640,"height":320}