Estimation Command:
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LS D(LOG(BR),1) C AR(1) MA(1) MA(2)

Estimation Equation:
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D(LOG(BR),1) = C(1) + [AR(1)=C(2),MA(1)=C(3),MA(2)=C(4),BACKCAST=1977,ESTSMPL="1977 2012"]

Substituted Coefficients:
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D(LOG(BR),1) = -0.010950515879 + [AR(1)=0.471512988098,MA(1)=0.518311664197,MA(2)=-0.481666299698,BACKCAST=1977,ESTSMPL="1977 2012"]

求各位大神告诉我这个式子要翻译成函数式是怎么样的。