# Probability density function

Hi experts!

In a line like this:

```
uniforme_x=RealDistribution('uniform',[a,b])
```

i call a 'uniform' probability density function: `f(t)=1/(b-a)`

, `a<t<b`

.

In addition, SAGE includes several probability density function: gaussian, log-normal, etc.

But: How can create in SAGE a probability density function created by me (F(t), DIFFERENT to gaussian, log-normal, etc...) and then create random numbers from it?

Waiting for your answers.

Thanks a lot.