Stop feeling helpless about square roots

Ľubomíra Dvořáková; Čeněk Škarda

Učitel matematiky (2015)

  • Volume: 023, Issue: 1, page 35-44
  • ISSN: 1210-9037

Abstract

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Calculation of the square root of natural numbers used to be a part of mathematics taught at elementary schools. However nowadays, we prefer calculators to our heads and the simple algorithm for square roots has been almost forgotten. The aim of this article is therefore to revive this art and moreover to show three methods: school-wise, Chinese and Indian. Before we recall the algorithms, try to invent your own way of calculation of square roots!

How to cite

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Dvořáková, Ľubomíra, and Škarda, Čeněk. "Pomoc od bezmoci z odmocnin." Učitel matematiky 023.1 (2015): 35-44. <http://eudml.org/doc/297673>.

@article{Dvořáková2015,
author = {Dvořáková, Ľubomíra, Škarda, Čeněk},
journal = {Učitel matematiky},
language = {cze},
number = {1},
pages = {35-44},
publisher = {Jednota českých matematiků a fyziků},
title = {Pomoc od bezmoci z odmocnin},
url = {http://eudml.org/doc/297673},
volume = {023},
year = {2015},
}

TY - JOUR
AU - Dvořáková, Ľubomíra
AU - Škarda, Čeněk
TI - Pomoc od bezmoci z odmocnin
JO - Učitel matematiky
PY - 2015
PB - Jednota českých matematiků a fyziků
VL - 023
IS - 1
SP - 35
EP - 44
LA - cze
UR - http://eudml.org/doc/297673
ER -

References

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  1. Bailey, D. H., Borwein, J. M., Ancient Indian Square Roots: An Exercise in Forensic Paleo-Mathematics, anuscript, 2011, dostupné na http://www.davidhbailey.com/dhbpapers/india-sqrt.pdf MR2988227
  2. Juškevič, A. P., Dějiny matematiky ve středověku, 1. vydání, Academia, Praha 1978. MR0525203
  3. Parakh, A., Aryabhata's Root Extraction Methods, Indian Journal of History of Science 42.2 (2007), 149-161. MR2343726
  4. Wang, L., Needham, J., 10.1163/156853254X00146, T'Oung Pao 43(5) (1955), 345-401. DOI10.1163/156853254X00146
  5. Škarda Č., Aritmetika včera a dnes, (www stránka s popisy algoritmů základních aritmetických operací), http://bimbo.fjfi.cvut.cz/~soc 

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