Change of Sign Method for Finding Roots - Casio Calculators
Teach Leaflet

Change of Sign Method for Finding Roots

fx-CG50 A-Level
This resource leads learners through the process of finding a root of a cubic equation using decimal search. It covers the thorny issue of using an interval in which the root lies to give an estimate for the root to a specified number of decimal places. Later examples include cases where roots may easily be missed. The extension task uses a discontinuous function that seems to give a spurious root.
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