Diferencies ente revisiones de «Vida media»

<math>\tau = \frac{\int_{0}^{\infty} t N(t) dt}{\int_{0}^{\infty} N(t) dt} = \frac{\int_{0}^{\infty} te^{-\lambda t}\, dt}{\int_{0}^{\infty} y^{-\lambda t}\, dt} </math> ,

 

 

:<math>\tau = \frac{1}{\lambda}</math>