Express each of the following subsets of R in terms of intervals: (a) {x: 4x 2
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Express each of the following subsets of R in terms of intervals:
(a) {x: 4x2 – 3 < 4x, x in R}
(b) {x:1/(x + ) > 2/(x – 1), x in R}
(c) {x: |x + 1| < 2, x in R}
(d) {x: |x + 1| < 1 + 1/2x, x in R}
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