4. Explain how bijection can be used to define the cardinality of an infinite set. Using that idea, show that the cardinality of the set containing all natural numbers (N) and the cardinality of the set containing positive odd numbers are the same.

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Q: 1. Use substitution technique to show that ++x+2+x- v2 +C dr 1 In rV+r+2 +x+2+r+ V2

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A: Please note that, as you asked (G.15) answer so I answered only part (G.15)

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Q: Theorem 84 Let a be a positive real number. For each real number r, 1. I리=a ← 2. 1-a|= |a|.

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Q: 7. Draw a line through the point such that the value of the y-intercept is the same as the value of…

A: please post the multiple question separately.Here I answered 1st question as per out policy