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Question: exercise 1 for each of the following sentences write out...

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Exercise 1. For each of the following sentences, write out what it means in words, state whether it is true or false, and prove your statement. (a) (3x e R)(2x + 7 = 3). (b) (Va e R)(2r+7-3) (c) (3r > 0)(2x + 7 = 3). (d) (Vr >0)(2r +7-3). (e) (Br R)(r2 -4r+3> 0) (f) (Va e R)(a2-4r +3 > 0) (8) (Br 27)(a2 -4r+3>0). (h) (Va 2 7)(-r+3>0) (i) (Vr R)(>0).
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