已知集合 A={x∣−1<x≤3}A = \{x \mid -1 \lt x \le 3\}A={x∣−1<x≤3}，B={x∣x≥2}B = \{x \mid x \ge 2\}B={x∣x≥2}，则 A∩BA \cap BA∩B 等于
