F Fischercr Oct 2015 27 0 Canada Nov 6, 2015 #1 Do I need to use the complete the square technique to solve this problem?

F Fischercr Oct 2015 27 0 Canada Nov 6, 2015 #2 Or can I say that u=x^2 +1, and the numerator becomes u+4?

A Archie Dec 2013 2,002 757 Colombia Nov 6, 2015 #3 I would write the numerator as \(\displaystyle x^2+1+4\) and then you can split it into two terms \(\displaystyle \int 1 + {4 \over x^2 + 1}\,\mathrm d x\). Reactions: Fischercr

I would write the numerator as \(\displaystyle x^2+1+4\) and then you can split it into two terms \(\displaystyle \int 1 + {4 \over x^2 + 1}\,\mathrm d x\).