共50条信息
已知集合\(M=\{x|x=k·90^{\circ}+45^{\circ},k∈Z\}\),\(N=\{x|x=k·45^{\circ}+90^{\circ},k∈Z\}\),则有 ( )
设\(A\),\(B\)是非空集合,定义\(A\)\(⊗\)\(B\)\(=\{\)\(x\)\(|\)\(x\)\(∈(\)\(A\)\(∪\)\(B\)\()\)且\(x\)\(∉(\)\(A\)\(∩\)\(B\)\().\)已知集合\(A\)\(=\{\)\(x\)\(|0 < \)\(x\)\( < 2\}\),\(B\)\(=\{\)\(y\)\(|\)\(y\)\(\geqslant 0\}\),则\(A\)\(⊗\)\(B\)\(=\)________.
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