Given .
Consumption expenditure (c)=2000+0.8Y^d
Invenstment function (I)=1000 - 100r
goverment expenditure (G) = 400
Tax (T)= 200 +0.2Y
Real money supply =800
Transaction demand and precautionary demand for money = 0.65Y
Speculative demand for money = 60-100r
Y^d=Y-T
Required
Derive the IS and LM curves?