For $\int\log(x+1)$, http://calculus-calculator.com/integral/ returns
$$-x+(x+1)\log(x+1)-1+c$$
The output contains the input. Does that mean the function is recursive?
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2Just because the integral of a function contains the function why would that mean the function is recursive? – Peter Foreman Aug 25 '19 at 10:33
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@PeterForeman Yes, OK. That was easy. – mjc Aug 25 '19 at 10:34
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What's your definition of recursive function? @mjc – jacopoburelli Aug 25 '19 at 11:03
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@jacopoburelli A function whose definition/output contains the whole function/input, e.g. $f(x)=gf(x)$. I think the log question was a simple confusion, now solved. – mjc Aug 25 '19 at 12:16