Du Plantier's Square Root Extractor

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This Demonstration shows square root extraction based on the identity . For example, to find the square root of 9, move along the
axis to
and along the
axis until the
mark on the sloping line is on the
axis. The
intercept of the sloping line will be
if measured in the same units as the
axis and the sloping line. If we scale the
axis in a
ratio with the
axis, then the
intercept will be at
.
Contributed by: Izidor Hafner (September 2012)
Open content licensed under CC BY-NC-SA
Snapshots
Details
Reference
[1] L. A. Graham, Ingenious Mathematical Problems and Methods, New York: Dover, 1959, pp. 74–75.
Permanent Citation
"Du Plantier's Square Root Extractor"
http://demonstrations.wolfram.com/DuPlantiersSquareRootExtractor/
Wolfram Demonstrations Project
Published: September 4 2012