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Original Message (ID '79869') By PhysicsGuy:
In Response To 'Re: Undefined' --------- Thank you very much, that works perfectly. I tried splitting conditional expression into the expression itself and the condition but ran onto the bad thing that it is hard to test the condition, i get an error message. May I ask you to have a look? here it is: 24 + 25 x + 4 Sqrt[10] Sqrt[4 - 25 y] - 75 y > 0 && -24 - 25 x + 4 Sqrt[10] Sqrt[4 - 25 y] + 75 y > 0 && y < 4/25 /.{x->1,y->2}