# Definite Integral of loglikelihood function multipled by Gaussian

I am trying to calculate

```
definite_integral((-ln(2*pi)-ln(sigma)-1/2*((x-mu)/sigma)^2)*f, x, -infinity, infinity)
```

where

```
f=1/(sqrt(2*pi)*sigmaprime)*exp(-1/2*((x-muprime)/sigmaprime)^2)
```

using sagemath.

I have done `from sage.symbolic.integration.integral import definite_integral`

And I have also done

```
assume(sigma>0)
assume(sigmaprime>0)
```

however I obtain this error

```
ValueError: Computation failed since Maxima requested additional constraints; using the 'assume' command before evaluation *may* help (example of legal syntax is 'assume(muprime>0)', see `assume?` for more details)
```

Is muprime positive, negative or zero?

However muprime can be positive, negative or zero. So I don't know how to proceed.