上一点,且与点A不重合.连结AP,以AO、AP为邻边作□OAPQ,PQ所在直线与x轴交
于点B.设点P的横坐标为.
(1)点Q落在x轴上时m的值.(3分)
(3)若点Q在x轴下方,则为何值时,线段BQ的长取最大值,并求出这个最大值.(4分)[参考公式:二次函数的顶点坐标为()]
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2