(2008•卢湾区二模)若平面向a=(x,y),b=(x
(2011•卢湾区二模)已知集合A={x|x=cos
(2009•卢湾区二模)若函数f(x)=2sin
(2009•卢湾区二模)方程3+2x=x
(2010•卢湾区二模)如图,反比例函数y=f(x)(x>0)的图象过点A(1,4)和B(4,1),点P(x,y)为该函
(2009•卢湾区二模)在方程x
(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•卢湾区二模)若一次函数y=x+k-2的图象在y轴上的截距是5,则k=______.
(2014•鞍山二模)在平面直角坐标系xOy中,A、B为反比例函数y=4x(x>0)的图象上两点,A点的横坐标与B点的纵
(2011•卢湾区二模)在(2x+1x
(2010•卢湾区二模)如图,在平面直角坐标系xOy中,抛物线y=-12x2+bx+c经过点A(1,3),B(0,1).
(2013•湖州二模)如图,在平面直角坐标系中,直线y=kx和双曲线y=k′x在第一象限相交于点A(1,2),点B在y轴
(2012•海淀区二模)如图,在平面直角坐标系xOy中,抛物线y=2mx2−2x与x轴负半轴交于点A,顶点为B,且对称轴