数学试题讲解

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已知集合

M = {y ∣ y = 2^{x}}, N = {y ∣ y = \sqrt{1 - x^{2}}}

, 则

M \cap N =

{x ∣ 0 < x < 1}

{x ∣ 0 < x ⩽ 1}

{x ∣ x ⩽ 1}

{x ∣ x > 0}