what i did so far
then the left side is
then i got stuck with this...
now what?
anyone able to help? so i can finish this one since it doesnt seem to be much left
nvm
then substistute with x=pi and y=0 and divide both with x^2
sin(pi)=0
0=C/pi^2
C=0*pi^2
C=0
if anyone can just confirm that this is right i would appriciate it