Dear All,

I am trying to write a simple code for demand which has a exponential distribution function. I define all the sets, parameter. When I write the constraint,

CONSTRAINT

Z(i,j)=exp(-lambda(i,j)*T) … here how can I write this constraint or is this right way to write it. Since I have two time period and writing T in the equation does not look write. Could you please let me know if there is a better way to write this constraint?

Thank you.

Sets

P /P1*P2/

T periods in the planning horizon / t1*t2/

Alies(i,j)

PARAMETERS

Lambda (i,j) for product i at time period t

Z(i,j) demand for product i at each period j

Data

TABLE

Lambda(P,T,*) for different time period for each product

Lambda (i,j)

P1 .t1 0.008

P2 .t1 0.008

P1 .t2 0.01

P2 .t2 0.01

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