{"type":"rich","version":"1.0","title":"( B₁ ; B₂ ) = ( 0 ; 5 )","html":"<iframe src=\"https://www.desmos.com/calculator/ls3tnzqvg8?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}