an A5 Putnam Exam integral for calc 2 students

Integral of ln(x+1)/(x^2+1) from 0 to 1, this integral was on the Putnam exam back in 2005. We will use a trig substitution and some integral properties to take care of this problem! This integral is also called the Serret's Integral. Subscribe to ‪@blackpenredpen‬ for more fun math videos. Check out Mu Prime's video on the integral of ln(x^2+1)/(x+1) from 0 to 1,    • It took me 3 hours to do this integral!