设集合A={x|a«X«负1或x»1},B={x|a«X«b}.设集合A={x|a«X«负1或x»1},B={x|a«X«b},已知A并B={x|x›2},A交B={x|1‹x«3},求a、b的值

Question

设集合A={x|a«X«负1或x»1},B={x|a«X«b}.
设集合A={x|a«X«负1或x»1},B={x|a«X«b},已知A并B={x|x›2},A交B={x|1‹x«3},求a、b的值

Answer 1

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