#Tk=4.
#b(x)= 1./(x**5 * (exp(14.34/(x*4.))-1))
#plot [0.1:4] b(x)
#Tk=3.
#b2(x)= 1./(x**5 * (exp(14.34/(x*3.))-1))
#replot b2(x)
#Tk=2.
b(x)= 1./(x**5 * (exp(14.34/(x*2.))-1)) 
plot [0.1:5] b(x)
#Tk=1.5
b2(x)= 1./(x**5 * (exp(14.34/(x*1.5))-1))
replot b2(x)
#Tk=1.
b3(x)= 1./(x**5 * (exp(14.34/(x*1.))-1))
replot b3(x)