{"type":"rich","version":"1.0","title":"2017年2学期 私大特講H11 log2に収束する級数","html":"<iframe src=\"https://www.desmos.com/calculator/saxlx2wyc5?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}