(2011•卢湾区二模)已知集合A={x|x=cos
(2011•卢湾区二模)已知集合A={x|x=cos
(2009•卢湾区二模)方程3+2x=x
已知集合A={x|x=cos
(2009•卢湾区二模)若函数f(x)=2sin
(2011•重庆二模)已知集合M={(x,y)|y=x+m},N={(x,y)|x=cosθy=sinθ,θ∈[−π2,
(2009•卢湾区二模)在方程x
(2011•卢湾区二模)在(2x+1x
(2009•河西区二模)已知向量m=(2cosωx,1),n=(3sinωx−cosωx,a),其中(x∈R,ω>0),
(2011•卢湾区二模)已知:抛物线y=ax2+bx+c经过点O(0,0),A(7,4),且对称轴l与x轴交于点B(5,
(2011•新余二模)已知函数f(x)=3sinωx+cos(ωx+π3)+cos(ωx−π3)−1(ω>0,x∈R),
(2013•莱芜二模)已知函数f(x)=22cos(x+π4)cos(x−π4)+22sinxcosx.
(2012•卢湾区二模)不等式|x-2|≤1的解集是______.