{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-05-26T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":43968,"title":"Concatenated roots","description":"Which is the value of this infinte concatenated roots?\r\n\r\n\u003c\u003chttps://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\u003e\u003e\r\n\r\n\r\nNote: If image server is not available, the equation was:\r\n\r\n  x*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\r\nTip: sum(1/n!)","description_html":"\u003cp\u003eWhich is the value of this infinte concatenated roots?\u003c/p\u003e\u003cimg src = \"https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\"\u003e\u003cp\u003eNote: If image server is not available, the equation was:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\u003c/pre\u003e\u003cp\u003eTip: sum(1/n!)\u003c/p\u003e","function_template":"function y = infinteroots(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny = 1;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx = 10;\r\ny = 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sum(1/n!)","description_html":"\u003cp\u003eWhich is the value of this infinte concatenated roots?\u003c/p\u003e\u003cimg src = \"https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif\"\u003e\u003cp\u003eNote: If image server is not available, the equation was:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003ex*sqrt(x*cuberoot(x*fourthroot(x*fifthroot(x*sixthroot(...)))))\r\n\u003c/pre\u003e\u003cp\u003eTip: sum(1/n!)\u003c/p\u003e","function_template":"function y = infinteroots(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nx = 1;\r\ny = 1;\r\nassert(abs(infinteroots(x)-y)\u003c1e-11)\r\n\r\n%%\r\nx = 10;\r\ny = 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