# Linear Transformation of the Unit Circle in $\Re^2$

by Pratibha Ghatage (Cleveland State University) and Sally Shao (Cleveland State University)

College Mathematics Journal
May, 2001

Subject classification(s): Geometry and Topology | Analytic Geometry | Circles
Applicable Course(s): 3.8 Linear/Matrix Algebra

Instead of using the image of a unit square in studying linear transformations in $R^2$, the authors show that looking at images of the unit circle yield an informative picture and illustrate several basic ideas.

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