Vertical Stretch and Isaac Newton’s Conics

Christopher Baltus ()
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Christopher Baltus: State University of New York at Oswego, Department of Mathematics

Chapter Chapter 15 in Collineations and Conic Sections, 2020, pp 175-184 from Springer

Abstract: Abstract A vertical stretch is a central collineation whose axis is a horizontal line and whose center is at infinity on the lines perpendicular to the axis. When the axis is the x-axis, and point (0, 1) is mapped to (0, k), for k≠0, then each point (x, y) is mapped to (x, ky). The scale factor is k. Vertical stretch Newton, I.

Date: 2020
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DOI: 10.1007/978-3-030-46287-1_15

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