Journal of the Mathematics Council of the Alberta Teachers’ Association
Volume 34 Issue 2, September 1997
42 – 48
David E. Dobbs and John C. Peterson
The ability to use the “zoom in” and “zoom out” features of a graphing calculator enables us to focus on the important parts of a graph. As the examples given below show, the zooming features can be particularly useful when we are trying to solve equations or inequalities, as well as when trying to determine if two algebraic expressions define the same function.
