{"type":"rich","version":"1.0","title":"Separation of variables example: family of circles","html":"<span class=\"wb-embed wb-embed-math\" data-latex=\"\\frac{dy}{dx}=-\\frac{x}{y}\\qquad\\Longrightarrow\\qquad x^{2}+y^{2}=C\">\\frac{dy}{dx}=-\\frac{x}{y}\\qquad\\Longrightarrow\\qquad x^{2}+y^{2}=C</span>","width":640,"height":320}