Parabola Drawing

Parabola Drawing
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2015-10-15 15:37
This example demonstrates how to draw a parabola y=a(x-h)^2+k. It involves the concept of quadratic functions, and by adjusting the values of a, h, and k, users can change the direction of the parabola's opening, its vertex position, and its shape. The construction summary uses GeoGebra commands such as h, k, a, A, f, b, B, and text1, which help users intuitively understand the properties of the parabola. Suitable for high school mathematics education and students learning quadratic functions.

GeoGebra Commands & Parameters

  1. Numeric h(1.0)
  2. Numeric k(-0.6)
  3. Numeric a(1.0)
  4. (h, k)
  5. f(x) = (a * (x - h)^(2)) + k
  6. y = k - (1 / 4 * a)
  7. (h, k + (1 / 4 * a))

AI Drawing Prompt Reference

Draw a parabola with its vertex at the point (1, -0.6). The parabola opens upward since the coefficient a is 1. The equation is y = a(x - h)^2 + k, with h = 1, k = -0.6, and a = 1. Include the axis of symmetry, a vertical line passing through the vertex. Also mark the focus, located at (1, -0.6 + 0.25) = (1, -0.35), which is 1/(4a) units above the vertex. Show the coordinate axes, the parabola, the vertex point, the axis line, and the focus point, with the vertex coordinates labeled.
The prompt above was compiled from the original drawing commands and is for reference only.