{"type":"rich","version":"1.0","title":"FDWK p66-67 #33 Using a Graph, Table, and Substitution to find limits","html":"<iframe src=\"https://www.desmos.com/calculator/lamiprc29x?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}