Question: Q6 (3 points). Determine whether the given functions defined in the set of real numbers (geometrically depicted as the straight line of numbers) are bijections

Q6 (3 points). Determine whether the given functions defined in the set of real numbers (geometrically depicted as the straight line of numbers) are bijections (if the decisions are not justified, the maximal assessment is 2 points): a) f(x)=1+x2 b) f(x)=2x

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