This is the sixth post in the GeoGebra 4.0 Sneak Peek Series. In this post, we are going to learn about the Function Inspector tool.

The *Function Inspector *is a new tool introduced in GeoGebra 4.0. This tool ‘inspects’ functions revealing properties such as its minima, maxima, root, area, and mean, etc., of a given interval.

The *Function Inspector* can also generate tables of values of *x *and *f*(*x*) given an interval and step value. This is very useful since we do not have to type them manually and use formulas in the *Spreadsheet View*. In addition to the *x*, *f*(*x*) table of values, we can also add columns that display the differences between consecutive *f(x)* values, first derivative, and the second derivative.

The *Function Inspector *can also generate tangent lines and osculating circle through a particular point on the graph of the function.

In the next post, we are going to discuss about text box and the command button.

**Related Posts**

- Sneak Peek 3– The New Text Tool
- Sneak Peek 4 – Graphing Inequalities
- Sneak Peek 5 – The Computer Algebra System

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