# GeoGebra

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## Normals to a Quadratic through a Given Point

This applet uses some nice features of Geogebra 4 (including multivariable functions) to create an interactive worksheet that can be used to investigate how many normals to $y=x^2$ go through a specified point.

The general question involves generating and solving a cubic, but with care students can investigate sub-problems that only involve solving quadratics. As an investigation it is suitable for an advanced A-level class.
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Shared by joningram

Material Type
Worksheet
Tags
Target group (age)
15-18
Language
English (UK)

GeoGebra version
4.0
Views
985
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