Impossible integral?
Name:
Anonymous
2007-12-06 10:13
Just curious about this indefinite integral:
int{ (1/x)*[log(1+x)]dx }
is it integrable?
Name:
Anonymous
2007-12-06 10:16
ofc i tried by parts, by substitution, asked my analysis teacher who says it's impossible, do i trust him?
Name:
Anonymous
2007-12-06 12:28
(%i1) integrate(log(1+x)/x,x);
(%o1) log(-x)*log(x+1)+li[2](x+1)
Name:
Anonymous
2007-12-07 1:25
you analysis teacher should be fired
Name:
Anonymous
2007-12-07 9:50
express it as a power series, fuck closed form.
Name:
Anonymous
2007-12-09 1:27
I put it into
http://integrals.wolfram.com/ and I came up with:
-Li2(-x) where Lin(x) is the polylogarithm function.
Name:
Anonymous
2007-12-18 17:09
ok, he told me something about this lin(x), sorry bout my ignorance.
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