Wolfram Demonstrations Project

Expressing a quadratic in vertex form (or turning point form) lets you see it as a dilation and/or translation of

. A quadratic in standard form can be expressed in vertex form by completing the square.

Based on Stephen Wolfram's Demonstration "Annotated Quadratic Polynomial".

Reference

[1] Wikipedia. "Quadratic Function." (Nov 28, 2011) en.wikipedia.org/wiki/Quadratic_function.

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Quadratic in Vertex Form (or Turning Point Form)