已知A={x|x²-x-2>0},
A:(x-2)(x+1)>0;
∴x>2或x<-1;
B={x|x²+3x-4
已知A={x|x²-x-2>0},B={x|x²+3x-4
已知A={x|x²-x-2>0},B={x|x²+3x-4
數(shù)學(xué)人氣:741 ℃時間:2020-06-12 04:10:35
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