the final mle estimates are :
coefficient standard-error t-ratio(t值)
beta 0 0.72235820E+04 0.40841114E+02 0.17687035E+03
beta 1 -0.44391110E+03 0.17298345E+03 -0.25662056E+01
beta 2 -0.10589797E+04 0.18334136E+03 -0.57760003E+01
sigma-squared 0.12632578E+07 0.10000007E+01 0.12632569E+07
gamma 0.18714592E-01 0.46892938E+00 0.39909190E-01
mu is restricted to be zero
eta is restricted to be zero
log likelihood function = -0.67420718E+02
the likelihood value is less than that obtained
using ols! - try again using different starting values


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