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","description_html":"\u003cp\u003eGiven values b (where abs(b)\u0026lt;=1) and n (polynomial order), write a function that calculates atan(b) by using power series.\u003c/p\u003e","function_template":"function y = myfun(b,n)\r\n  y = b+n;\r\nend","test_suite":"%%\r\nff = 'fileread';\r\nassert(nargin(ff)~=-1, 'empty file forbidden')\r\nfiletext = fileread('myfun.m');\r\nassert(isempty(strfind(filetext, '''')),'string forbidden')\r\nassert(isempty(strfind(filetext, 'varargin')),'varargin forbidden')\r\nassert(isempty(strfind(filetext, 'ans')),'ans forbidden')\r\nassert(isempty(strfind(filetext, 'atan')),'atan forbidden')\r\nassert(isempty(strfind(filetext, 'atan2')),'atan2 forbidden')\r\nassert(isempty(strfind(filetext, 'atand')),'atand forbidden')\r\nassert(isempty(strfind(filetext, 'atan2d')),'atan2d forbidden')\r\nassert(isempty(strfind(filetext, 'tan')),'tan forbidden')\r\nassert(~isempty(filetext),'empty file forbidden')\r\n%%\r\nb = 0.1;\r\nn = 3;\r\ny_correct = 0.09966667;\r\nassert(abs(myfun(b,n)-y_correct)\u003c1e-6)\r\n%%\r\nb = 0.01;\r\nn = 5;\r\ny_correct = 0.00999967;\r\nassert(abs(myfun(b,n)-y_correct)\u003c1e-6)\r\n%%\r\nb = 0.2;\r\nn = 3;\r\ny_correct = 0.19733333;\r\nassert(abs(myfun(b,n)-y_correct)\u003c1e-6)\r\n%%\r\nb = 0.2;\r\nn = 1;\r\ny_correct = 0.20000000;\r\nassert(abs(myfun(b,n)-y_correct)\u003c1e-6)\r\n%%\r\nb = 0.2;\r\nn = 7;\r\ny_correct = 0.19739550;\r\nassert(abs(myfun(b,n)-y_correct)\u003c1e-6)","published":true,"deleted":false,"likes_count":1,"comments_count":6,"created_by":274816,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":16,"test_suite_updated_at":"2019-07-16T15:54:20.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2019-02-13T20:58:53.000Z","updated_at":"2026-05-30T01:38:35.000Z","published_at":"2019-02-13T20:58:53.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven values b (where abs(b)\u0026lt;=1) and n (polynomial order), write a function that calculates atan(b) by using power series.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"errors":[],"facets":[[],[{"value":"easy","count":1,"selected":false}]],"term":"tag:\"arctangent\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}