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Question: Integration of Planck radiation law

Question:Integration of Planck radiation law

tazatel 50 Maple 2016
integration
June 24 2017
1

I'm trying to obtain integral of Planck radiation law in Maple:

with this command:

f := (2*h*(c)^(2))/((x)^(5))*(1)/(exp((h*c)/(x*k*T))-1);
int(f,x=0..infinity);

but I get some terrible limit that cannot be solved instead of the correct result:

How to obtain correct integral?

planck.mw
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