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Consider the function f:RxR R by the rule f(x, y) = x-y for all (x, y) in RX R a. Is fone-to-one? Prove or

Consider the function f:RxR R by the rule f(x, y) = x-y for all (x, y) in RX R a. Is fone-to-one? Prove or give a counterexample. b. Is fonto? Prove or give a counterexample.

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a To show that the function f R x R R defined by fx y x y is onetoone we need to show that if fx1 y1 ... blur-text-image

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