(1)求抛物线的解析式;
(2)如图1,当点在第一象限时,设点的横坐标为,的面积为,求关于的函数解析式(不要求写出自变量的取值范围);
(3)如图2,在(2)的条件下,点在轴的正半轴上,且,连接,当直线交轴正半轴于点,交轴于点时,过点作交轴于点,过点作轴的平行线交线段于点,连接,过点作交线段于点,的平分线交轴于点,过点作交于点,过点作于点,若,求点的坐标.
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