(1)如图1,若m=.
①当OC=2时,求抛物线C2的解析式;
②是否存在a,使得线段BC上有一点P,满足点B与点C到直线OP的距离之和最大且AP=BP?若存在,求出a的值;若不存在,请说明理由;
(2)如图2,当OB=2﹣m(0<m<)时,请直接写出到△ABD的三边所在直线的距离相等的所有点的坐标(用含m的式子表示).
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