hello everyone

my sister asks me to help her to solve these limitation

I'm a mathematics teacher but unfortunately, I forgot those rules to solve them since I was student

so could u plz help me

the question : simplify and solve :

1) lim (n^2)/(n*log(n^3))

2) lim n*log(n^3)/n*log(n)

3) lim n*log(n^3)/n

all of them when the limit goes to infinity

thanks

AFAF