Hello.
Sage cannot integrate the expression f.
However, with g there is no problem.
Here g is the factored version of f.
Is this expected?
Thanks in advance,
Guillermo Moreno-Socías
┌────────────────────────────────────────────────────────────────────┐
│ SageMath Version 6.10, Release Date: 2015-12-18 │
│ Type "notebook()" for the browser-based notebook interface. │
│ Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: var('x')
x
sage: f=1/(x+x*(ln(x))^2);f
1/(x*log(x)^2 + x)
sage: integral(f,x)
integrate(1/(x*log(x)^2 + x), x)
sage: g=1/(x*(1+(ln(x))^2));g
1/((log(x)^2 + 1)*x)
sage: integral(g,x)
arctan(log(x))
sage:
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