# Difference between revisions of "Comments:ZoomIn Command"

From GeoGebra Manual

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=== Linear aproximation of a function by its tangent === | === Linear aproximation of a function by its tangent === | ||

− | Create a function with a point A on it and a button with the code | + | Create a function f with a point A on it and a button with the code <code>ZoomIn[A,2]</code> to see that the function looks equal to the tangent for a big "magnification". Another button with [[ZoomOut Command|ZoomOut]] let you be able to prove this at other positions of the point A. |

− | |||

− | to see that the function looks equal to the tangent for a big "magnification". Another button |

## Revision as of 11:08, 4 May 2011

## Idea of Use

### Linear aproximation of a function by its tangent

Create a function f with a point A on it and a button with the code `ZoomIn[A,2]`

to see that the function looks equal to the tangent for a big "magnification". Another button with ZoomOut let you be able to prove this at other positions of the point A.