*"p c x1 x2 x3 x4 x5 @trend sin(@trend*@acos(-1)/365) ar(1) ar(7) ar(14) ma(1)"*. where x are the indicator functions.

However now I am still missing the

**alpha8**from the model (see attachment) and I don't really know how to model this.

I cannot add another constant c and adding just a 'dummy' variable equal to 1 does not give the required result since Eviews will only estimate sin(@trend*@acos(-1)/365) as 1 variable, i.e. only

**alpha7**. Does anyone know how I can get

**alpha8**? I assume this should not be a very difficult problem to solve but I just can't figure out how I should do this.

Thanks!