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Student Support Forum > General > > "Integrating over regions"

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Please answer this:4+1 =



Original Message (ID '134256') By yehuda:
1. Use the Asumptions option of Integrate 2. move the xup == yup constraint to the Assumptions 3. use Simplify. if you do not use 2. above, use FullSimplify Integrate[ If[x >= y, 1, 0] 1/((1 - xup) (1 - yup)), {x, xup, 1}, {y, yup, 1}, Assumptions -> {0 < xup < 1, 0 < yup < 1, xup == yup}] // Simplify returns 1/2 yehuda