ggregate Demand Derivation of Is curve(Keynesian Cross) 2. Derivation of LM curve(the theory of liquidity preference) 3.IS-LM equilibrium 4. Monetary and fiscal policy 5. The Great DepressionAggregate Demand 1. Derivation of IS curve (Keynesian Cross) 2. Derivation of LM curve (the theory of liquidity preference) 3. IS-LM equilibrium 4. Monetary and fiscal policy 5. The Great Depression