11.已知全集U=R,集合A={x|x2-2x-3>0},B={x|2<x<4},则集合(∁UB)∩A=( )
| A. | [-1,4] | B. | (-∞,2)∪(2,3) | C. | [2,3) | D. | (-∞,-1)∪[4,+∞) |
10.已知定义在R上的奇函数f(x)满足f(x+2)=f(x),且在(0,1]上,满足f(x)=$\frac{x^2-x}{2}$,则f(-2016)+f(-2016$\frac{1}{2}$)=( )
| A. | 0 | B. | $\frac{1}{4}$ | C. | -$\frac{1}{8}$ | D. | $\frac{1}{8}$ |
8.若圆C的半径为1,圆心C与点(2,0)关于直线x+y-1=0对称,则圆C的标准方程为( )
| A. | (x-1)2+(y+1)2=1 | B. | (x-1)2+(y-1)2=1 | C. | (x+1)2+(y+1)2=1 | D. | (x+1)2+(y-1)2=1 |
7.函数f(x)=$\frac{1}{x^2-x}$+$\sqrt{2-x}$的定义域是( )
| A. | (-∞,1)∪(1,2) | B. | (-∞,0)∪(0,1)∪(1,2) | C. | (-∞,0)∪(1,2) | D. | (-∞,0)∪(0,1)∪(1,2] |
6.命题“?x0∈R,3${\;}^{{x}_{0}}$+1≤$\frac{3}{2}$”的否定为( )
| A. | ?x0∈R,3${\;}^{{x}_{0}}$+1>$\frac{3}{2}$ | B. | ?x0∈R,3${\;}^{{x}_{0}}$+1≥$\frac{3}{2}$ | ||
| C. | ?x∈R,3x+1>$\frac{3}{2}$ | D. | ?x∈R,3x+1<$\frac{3}{2}$ |
2.直线x-ytana-5=0(α∈(0,$\frac{π}{4}$))的倾斜角的变化范围是( )
0 224657 224665 224671 224675 224681 224683 224687 224693 224695 224701 224707 224711 224713 224717 224723 224725 224731 224735 224737 224741 224743 224747 224749 224751 224752 224753 224755 224756 224757 224759 224761 224765 224767 224771 224773 224777 224783 224785 224791 224795 224797 224801 224807 224813 224815 224821 224825 224827 224833 224837 224843 224851 266669
| A. | ($\frac{π}{4}$,$\frac{π}{2}$) | B. | ($\frac{π}{4},\frac{π}{3}$) | C. | ($\frac{π}{3},\frac{π}{2}$) | D. | ($\frac{π}{4},\frac{π}{2}$] |