Integration by Parts: Q6 - (-(0-0)), Q3 Explained

[a.a]

Homework Statement

In question 6, where does the -(0-0) part come from. The instructor did this for another question, question number 3 as well except in the other question the resulting value was a non-zero one and thus affected the answer..
any help appericiated.

http://www.math.mcmaster.ca/lovric/solLS2/assg16byparts_solutions.html [Broken]

 

[dx]

x arctan(x) - ½ ln(1 + x²) evaluated at x = 0 is (0 - 0).

 

[a.a]

ohh.. so for number 3, at x=0 its 0-1/9

THANK YOU!
i don't know how i missed that