1.已知集合A={x|-2<x≤2,x∈Z},B={x|x2-4x-5<0},则A∩B=( )
| A. | {0,1,2} | B. | (-1,2] | C. | {1,2} | D. | (1,2) |
19.已知函数f(x)=$\sqrt{3}$sin2x-cos2x-m在[0,$\frac{π}{2}$]上有两个零点,则m的取值范围是( )
0 233784 233792 233798 233802 233808 233810 233814 233820 233822 233828 233834 233838 233840 233844 233850 233852 233858 233862 233864 233868 233870 233874 233876 233878 233879 233880 233882 233883 233884 233886 233888 233892 233894 233898 233900 233904 233910 233912 233918 233922 233924 233928 233934 233940 233942 233948 233952 233954 233960 233964 233970 233978 266669
| A. | (1,2) | B. | [1,2] | C. | (1,2] | D. | [1,2) |