5.2. Show that the AR(3) model cxt = (c − 1)xt−1 + Xt−3 + Ut, in which u₺ are i.i.d. zero-mean random variables, is nons
Posted: Wed May 04, 2022 12:02 pm
5.2. Show that the AR(3) model cxt = (c − 1)xt−1 + Xt−3 + Ut, in which u₺ are i.i.d. zero-mean random variables, is nonstationary for all values of c# 0. For what of c is this autoregressive model unit-root nonstationary?