Which of the following domains are closed and which are bounded? (a) {(x, y) R: x +
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Which of the following domains are closed and which are bounded?
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(a) {(x, y) R: x + y 1} (b) {(x, y) = R: x + y <1} (c) {(x, y) = R: x 0} (d) {(x, y) R: x > 0, y > 0} (e) {(x, y) = R: 1 x 4,5 y 10} (f) {(x, y) = R : x > 0, x + y 10}
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