Solving $f(n) = n \log(n)$ using this version of Master theorem.

Question

I am trying to solve this $T(n)= 2T(n/2) + n\log(n)$ using this version of master theorem in my lecture notes:

But I cannot be able to solve it. But if I use other version master theorem found on net, one example wiki's

I am able to solve this question using case 2. So which theorem is to use? And there are different case 2 solutions for different Master Theorem versions. Which is the best to apply? I am quite confused. Thanks.