Question: Consider the function ?: {0,1} defined as ? (a,b) = a - 2ab + b. Is ? injective? Is it surjective? Bijective? Explain.

Consider the function ?: {0,1} mathbb{N} ightarrowmathbb{Z} defined as ? (a,b) = a - 2ab + b. Is ? injective? Is it surjective? Bijective? Explain.

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