数学试题讲解

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设全集

U = R, A = {x ∣ x \leq 1}, B = {x ∣ x^{2} - x - 2 < 0}

, 则图中阴影部分对应的集合为

A.

{x ∣ x \geq 1}

B.

{x ∣ 1 \leq x < 2}

C.

{x ∣ x > 1}

D.

{x ∣ 1 < x < 2}