{"action":"created","issue":{"url":"https://api.github.com/repos/sympy/sympy/issues/14143","repository_url":"https://api.github.com/repos/sympy/sympy","labels_url":"https://api.github.com/repos/sympy/sympy/issues/14143/labels{/name}","comments_url":"https://api.github.com/repos/sympy/sympy/issues/14143/comments","events_url":"https://api.github.com/repos/sympy/sympy/issues/14143/events","html_url":"https://github.com/sympy/sympy/issues/14143","id":296070269,"number":14143,"title":"(log(1 + x)/log(1 - x)).series(x, n=5) is wrong","user":{"login":"Roland-Sands","id":35615713,"avatar_url":"https://avatars1.githubusercontent.com/u/35615713?v=4","gravatar_id":"","url":"https://api.github.com/users/Roland-Sands","html_url":"https://github.com/Roland-Sands","followers_url":"https://api.github.com/users/Roland-Sands/followers","following_url":"https://api.github.com/users/Roland-Sands/following{/other_user}","gists_url":"https://api.github.com/users/Roland-Sands/gists{/gist_id}","starred_url":"https://api.github.com/users/Roland-Sands/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Roland-Sands/subscriptions","organizations_url":"https://api.github.com/users/Roland-Sands/orgs","repos_url":"https://api.github.com/users/Roland-Sands/repos","events_url":"https://api.github.com/users/Roland-Sands/events{/privacy}","received_events_url":"https://api.github.com/users/Roland-Sands/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-02-10T03:47:48Z","updated_at":"2018-02-10T04:34:06Z","closed_at":"2018-02-10T04:34:06Z","author_association":"NONE","body":"Every coefficient is wrong\r\n\r\nWith some other instances of incorrect expansions, the right answer is obtained by having `n` large enough\r\nThat doesn't seem to be the case here\r\n\r\n```\r\n>>> (log(1 + x)/log(1 - x)).series(x, n=5)\r\n-1 + x - x**2/2 + 5*x**3/12 - 7*x**4/24 + O(x**5)\r\n>>> (log(1 + x)/log(1 - x)).series(x, n=30)\r\n-1 + x - x**2/2 + 5*x**3/12 - 7*x**4/24 + 191*x**5/720 - 33*x**6/160 + 11779*x**7/60480 - 19309*x**8/120960 + 79771*x**9/518400 - 945251*x**10/7257600 + 60920509*x**11/479001600 - 11710379*x**12/106444800 + 283437680257*x**13/2615348736000 - 498146741503*x**14/5230697472000 + 23703563647*x**15/251073478656 - 5270304262141*x**16/62768369664000 + 2677096426669309*x**17/32011868528640000 - 106825260312559*x**18/1422749712384000 + 3834620577495988307*x**19/51090942171709440000 - 1387735774944179593*x**20/20436376868683776000 + 2295449410093752418687*x**21/33720021833328230400000 - 597151730835019584311*x**22/9634291952379494400000 + 23184670448895363216499*x**23/372269041039943663616000 - 6935741281309822546189*x**24/121656549359458713600000 + 2916396485076677473249424791*x**25/50814724101952310083584000000 - 5363928586584790270169016937*x**26/101629448203904620167168000000 + 32450007699169024050257019077*x**27/609776689223427721003008000000 - 3153733739880853817521797433*x**28/64187019918255549579264000000 + 4784730325076937285831154849949*x**29/96455585386251294049566720000000 + O(x**30)\r\n```"},"comment":{"url":"https://api.github.com/repos/sympy/sympy/issues/comments/364625441","html_url":"https://github.com/sympy/sympy/issues/14143#issuecomment-364625441","issue_url":"https://api.github.com/repos/sympy/sympy/issues/14143","id":364625441,"user":{"login":"Roland-Sands","id":35615713,"avatar_url":"https://avatars1.githubusercontent.com/u/35615713?v=4","gravatar_id":"","url":"https://api.github.com/users/Roland-Sands","html_url":"https://github.com/Roland-Sands","followers_url":"https://api.github.com/users/Roland-Sands/followers","following_url":"https://api.github.com/users/Roland-Sands/following{/other_user}","gists_url":"https://api.github.com/users/Roland-Sands/gists{/gist_id}","starred_url":"https://api.github.com/users/Roland-Sands/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Roland-Sands/subscriptions","organizations_url":"https://api.github.com/users/Roland-Sands/orgs","repos_url":"https://api.github.com/users/Roland-Sands/repos","events_url":"https://api.github.com/users/Roland-Sands/events{/privacy}","received_events_url":"https://api.github.com/users/Roland-Sands/received_events","type":"User","site_admin":false},"created_at":"2018-02-10T04:34:06Z","updated_at":"2018-02-10T04:34:06Z","author_association":"NONE","body":"Sorry"}}
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