Question: Can Maple evaluate this limit

I am attempting to apply some routine tests to determine the convergence of series with positive terms. I have run into a little difficulty with the root test. I am using surd( ) as shown below, but Maple will not give the exact value, which in my example, should be exp(6). Why is this happening and is there a way to get the root test to work?

Thanks!

 

a := ((k+1)/k)^(6*k^2):

limit(surd(a, k), k = infinity)

limit(surd(((k+1)/k)^(6*k^2), k), k = infinity)

(1)

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