Repeat Exercise for the infimum and the minimum of each set.ExerciseFor each subset of ℝ,...

Repeat Exercise for the infimum and the minimum of each set.

Exercise

For each subset of ℝ, give its supremum and its maximum, if they exist. Otherwise, write “none.”

(a) {1, 3}

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(b) {π, 3}

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(c) [0, 4]

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(d) (0, 4)

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(e)

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(f)

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(g)

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(h)

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(i)

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(j) (− ∞, 4)

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(k)

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(l)

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(m) {r ϵ ℚ : r<5}

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(n) {r ϵ ℚ : r2<5}