What am I doing wrong here ?(adsbygoogle = window.adsbygoogle || []).push({});

Tabular and Recursive Integration By Parts don't agree for the

Integral of [Ln x]^2 dx

Using Tabular Integration By Parts …………

....................................................1

[ Ln x ]^2 ..................................... x

2 (Ln x)( 1/x )................................x^2 / 2

2 (1/x) (1/x) + 2Ln x (–1/x^2)............x^3 / 6

I get ..............

x(Ln x)^2 – x Ln x + (1/3) x (1 – Ln x) = x(Ln x)^2 – (4/3)x Ln x + (1/3) x

But WolframAlpha gives ..

x(Ln x)^2 – 2x Ln x + 2x)

Thanks for any suggestions.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Tabular and Recursive IBP don't agree

**Physics Forums | Science Articles, Homework Help, Discussion**