Hello everybody, I am trying to model a simple logistical problem in Maple using a double loop and 2 indices to indicate what parameters the solutions belong to. Maple however doesn't give me any output or error in the following setting: p[1] := 1; p[2] := 4; for n to 2 do for s to 10 do EBO[s, p[n]] := sum((x-s)*p[n]^x*evalf(exp(-p[n]))/factorial(x), x = s+1 .. infinity) end do end do THX for all your help in advance, Fred

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