Modeling
The AD/AS model is used to illustrate the Keynesian model of the business cycle. Movements of the two curves can be used to predict the effects that various exogenous events will have on two variables: real GDP and the price level. Furthermore, the model can be incorporated as a component in any of a variety of dynamic models (models of how variables like the price level and others evolve over time). The AD-AS model can be related to the Phillips curve model of wage or price inflation and unemployment.
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