Change the Cartesian integral into an equivalent polar integral. Then evaluate the polar integral. O dy dx 1+ + y 1 - x Change the Cartesian integral into an equivalent polar integral. O O 5 dy dx = or do 1+ 1x + y 0 -1 - x2 (Type exact answers, using it as needed.) The value of the double integral is (Type an exact answer, using it as needed.)