6) 

Determine convergence or divergence of the series sum(`/`(`*`(`+`(`*`(`^`(n, 3)), n)), `*`(`+`(`*`(`^`(n, 6)), `-`(`*`(`^`(n, 2))), 1))), n = 1 .. infinity)   by using the Limit Comparison Test.  (Hint: for large n, what does  Typesetting:-mfrac(Typesetting:-mrow(Typesetting:-msup(Typesetting:-mi(  look like?)