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Mathematics, 15.11.2019 22:31 eli761029
Let a = r β {β2}, b = r β {1} and f : a β b be given by the rule f(x) = x + 1 x + 2 . (a) prove f is one-to-one. (b) prove f is onto b. (comment: donβt forget that if given b β b, you construct a such that f(a) = b, you must also show a β a.)
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Let a = r β {β2}, b = r β {1} and f : a β b be given by the rule f(x) = x + 1 x + 2 . (a) prove f i...
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