安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Parabola - Wikipedia
In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped It fits several superficially different mathematical descriptions, which can all be proved to define exactly the same curves One description of a parabola involves a point (the focus) and a line (the directrix)
- Parabola - Math is Fun
A parabola is a curve where any point is at an equal distance from: a fixed point (the focus), and; a fixed straight line (the directrix)
- Parabola - Formula, Graphing, Examples | Parabola Equation - Cuemath
A parabola is the locus of a point that is equidistant from a fixed point called the focus (F), and the fixed-line is called the Directrix (x + a = 0) Let us consider a point P(x, y) on the parabola, and using the formula PF = PM, we can find the equation of the parabola
- What are parabolas, their equations, their rules? | Purplemath
What is a parabola? A parabola is a particular type of geometrical curve which, algebraically, corresponds to a quadratic equation In geometrical terms, the parabola corresponds to the edge of slice of an inverted cone; this slice is what is called the conic "section"
- Parabola - Math. net
A parabola is the characteristic U-shaped curve of a quadratic equation A parabola can be used to model many real-world phenomena For example, when you shoot a basketball, the path of the ball creates a parabola Below are two parabola graph examples, one in which the parabola opens upwards and one in which it opens downwards:
- Parabola | Definition, Origin, Equation, Applications | Britannica
parabola, open curve, a conic section produced by the intersection of a right circular cone and a plane parallel to an element of the cone—that is, the cone’s surface
- Parabola – Properties, Components, and Graph - The Story of Mathematics
Parabolas are curves that contain points where their distances from the focus and their distances from the directrix will always be equal The model below can help us visualize what this definition means A parabola will contain three important elements: a focus, a directrix, and a vertex
- What is a Parabola? - Interactive Mathematics
In geometry, a parabola is a two-dimensional, mirror symmetrical curve which is approximately U-shaped It fits any of several superficially different mathematical descriptions which can all be proved to define curves of exactly the same shape
|
|
|