Hi,

I think that in chapter 12, equation 12.19 should be changed from:

$ f(T) = \left(\frac{1}{T_{min}}-\frac{1}{T_{max}}\right)\frac{1}{T^2} $

to:

$ f(T) = \left(\frac{T_{min}T_{max}}{T_{min}-T_{max}}\right)\frac{1}{T^2} $

The factor $\left(\frac{1}{T_{min}}-\frac{1}{T_{max}}\right)$ is the normalization of $\frac{1}{T^2}$ between $T_{min}$ and $T_{max}$ and it should be dividing. The implementation in the code is obviously correct.

Thanks!!

Pablo Botas