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(-∞,-1)∪(-1,2] [-1,2] (-∞,-1)∪[2,+∞) (-1,2]
[-2,2] [-1,2] [1,2] [-2,-1]∪[1,2]
(-∞,-3] (1,2] (-∞,-3]∪[1,2] (-∞,-3]∪(1,2]
={(x,y)|4x+y=6}, ={(x,y)|3x+2y=7},则A.∩B.等于( ) A.{x=1,或y=2}B.{1,2} {(1,2)} (1,2)
int N=5,b[N][N]; int a[1][2]={{1},{3}}; int c[2][ ]={{1,2},{3,4}}; int d[3][2]={{1,2},{3,4}};
(-1,2) [-1,2) [-1,2] (-l,2]
反1,3>顺1,3>反1,2>顺1,2 顺1,3>反1,3>反1,2>顺1,2 反1,2>顺1,3>反1,3>顺1,2 顺1,3>反1,2>反1,3>顺1,2 反1,2>反1,3>顺1,3>顺1,2
int a[1][4]={1,2,3,4,5}; float a[3][]={{1,2},{2,3},{3,1}}; long a[2][3]={{1},{1,2},{1,2,3},{0,0}}; double a[][3]={8};
(2,﹣3) (﹣2,3) (2,3) (﹣2,﹣3)
={x|-3≤2x-1≤3},集合 为函数y=lg(x-1)的定义域,则A.∩B.= ( ) A.(1,2)B.[1,2] [1,2) (1,2]
={x|-3≤2x-1≤3},集合 是函数y=lg(x-1)的定义域;则A.∩B=( ) A.(1,2)B.[1,2] [1,2) (1,2]
(-1,2) (3,6) (-1,2)∪(3,6] (-1,2)∪(3,6)
={1,2},则∁UA等于( ) A.{3,4} {1,2} {0,1,2} {0,3,4}
int N=5,b; int a[1][2]={{1},{3}}; int c[2][ ]={{1,2},{3,4}}; int d[3][2]={{1,2},{3,4}};
int N=5,b int a[1][2]={{1},{3}} int c[2][]={{1,2},{3,4}} int d[3][2]={{1,2},{34}}
int N=5,b; int a[1][2]={{1},{3}}; intc[2][]={{1,2},{3,4}}; int d[3][2]={{1,2},{34}};