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On solving a quadratic

Published online by Cambridge University Press:  01 August 2016

W. W. Milner  and
F. R. Watson
W. W. Milner
Affiliation:
Sir George Monoux Sixth Form College, Chingford Road, London E17
F. R. Watson
Affiliation:
Department of Education, University of Keele, Staffordshire ST5 5BG
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Extract

“Find the modulus and the argument of each root of the equation:

(University of London A level, part question.)

We were investigating iterative methods of solving the equation, using a micro-package (in BASIC) which performs complex arithmetic and displays the results in an Argand diagram. The facility for “doodling” which this provides led to some interesting conjectures and results, of which this note is an account.

Type
Research Article
Information
The Mathematical Gazette , Volume 73 , Issue 464 , June 1989 , pp. 82 - 86
Copyright
Copyright © The Mathematical Association 1989

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