(1)求的值和直线的解析式;
(2)如图1,是抛物线上在直线下方的一点,直线交抛物线的对称轴于点,连接,直线交抛物线对称轴于点,当时,求点的坐标;
(3)在直线上有一点,的横坐标为,将绕点逆时针旋转过有一定的角度,得到,直线交于,当直线将分割为面积比为:的两部分时,直接写出的值及的坐标.
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