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Dictionary: Parabola
A parabola is the curve you get when you graph a quadratic function — the characteristic U-shape.
f(x) = ax² + bx + c
The parabola opens upward when a > 0, and downward when a < 0. It is always symmetric about a vertical axis.
In nature: The path of a ball, the arch of a bridge, satellite dishes.
Nature is written in mathematical language.
— Galileo Galilei (1564–1642)
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