The function is as follows:
and I want to calculate the following limit:
The reason I'm having trouble with this one is because the limit doesn't seem to be $0$ but $y_0^2$. Because of that, I need 2 functions to compare $f$ to, instead of one. The greater one I found like this:
so (if I'm correct) the limit is definitely lower or equal to $y_0^2$. But I can't find the function to be my upper bound that also converges to that value.