1. The problem statement, all variables and given/known data lim(x,y)->(1,0) of ln((1+y^2)/(x^2+xy)) 2. Relevant equations 3. The attempt at a solution Used two paths, x=1 y=0 both gave my lim=0 so I tried x=rsin y=rcos, in attempt to use ε-δ to prove it. got to ln((1+r^2sin^2)/(r^2cos(cos+sin))) not sure where to go from here.