Question: Plotting a difficult integral

HI, URGENT! pls help.

the monster is

f := int(x^2/(e^x-1), x = y .. infinity);

y is some finite positive number. My goal is to plot f against y

I've tried to use either evalf or ApproximateInt to get a number but failed. The error msg either says object is too big or maple can't allocate enough resource.

pls help!

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