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|    sci.math.symbolic    |    Symbolic algebra discussion    |    10,432 messages    |
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|    Message 10,009 of 10,432    |
|    Nasser M. Abbasi to All    |
|    hard integral    |
|    12 Mar 20 20:51:32    |
      From: nma@12000.org              This came up in different forum.              https://mathematica.stackexchange.com/questions/216166/how-can-a       simplify-the-following-equation               Integrate[(1 + Log[x])*Sqrt[1 + 1/(x^2 Log[x]^2)]              I tried Fricas, Mathematica and Rubi 4.16.1 and Maple 2020       on it, and non could solve it.              In Fricas, it gives this (it looks like incomplete Risch implementation?)              >> Error detected within library code:        integrate: implementation incomplete (constant residues)              Yet, as shown by the answer given in the other forum by Artes that his clever       substitution u=x*ln(x) resulted in integrand which can be easily solved.              I would have expected these top CAS systems to therefore solve this.              --Nasser              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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