已知G={e,(12),(34),(12)(34)}.求Z1=( )
A: {e,(34)}
B: {e}
C: {(12),(12)(34)}
D: {(34)}
A: {e,(34)}
B: {e}
C: {(12),(12)(34)}
D: {(34)}
举一反三
- Given G={e,(12),(34),(12)(34)}. Solve Z1= ( ) A: {(34)} B: {e} C: {(12),(12)(34)} D: {e,(34)}
- 已知G={e,(12),(34),(12)(34)}.令a1=e,a2=(12),a3=(34),a4=(12)(34),则c1(a1)=______ c1(a2)=______ c1(a3)=______ c1(a4)=______
- ."12"+34= 2."12"& 34= 3."12"+"34"= 4."12"&"34"=
- 表达式 (12, 34) + (56) 的结果是? A: (12, 34, 56) B: [12, 34, 56] C: 程序出错 D: (12, 34, (56))
- 已知函数f(x)=acos2x-bsinxcosx-a2的最大值为12,且f(π3)=34,则f(-π3)=( ) A: 12 B: -34 C: -12或34 D: 0或-34