Math Problem Statement
Обозначим через O вершину параболы y = ax^2. Назовём прямую, пересекающую параболу в двух точках A и B, особой, если угол AOB – прямой. Докажите, что все особые прямые проходят через одну точку.
Solution
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Math Problem Analysis
Mathematical Concepts
Parabola
Quadratic Equations
Vector Geometry
Formulas
Vector cross product in 2D
Theorems
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Suitable Grade Level
Advanced High School
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