Types of function

Types of function :-
1) Liner function:- Is the function that will be formed by straight line because the equiralence of the first degree.
Y=a+bx



2) Non linear fun:- The shap is not straight and shows where the in dependent variable is brought in to aforce more than one .
Y=12+4x2

a-From the second dvision :-
y=a+bx+cx2


b- of the third degree and more :-
y=a+bx+cx2+dx


3) Exponential fun :- Which is the function where the in dependent variable exponential .
Y=ax


*Types of model:-

1-According to size :-
a-eqution model
y=5x
b-multipler equation
QD=a+bp
QS=c+dp
QD=QS

2-According to time :-
a-Static model
b-Dynamic model

3-According to Seope:-
a-Micro model ,Dands
b-Macro model ,I,C,Y







*Model Building :-
1) Specification of model .
2) Collection of Data.
3) Estimation of the model .
4)Testing of model .
5) Simulation of model .
6) Forecasting of model .
7) Application of model .