Stage 1: Learning

Watch the following video on locating roots approximately with the change of sign method, following the examples carefully with a pen and paper as you go.

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Timestamps

00:00 - Determining the existence of roots graphically

02:34 - Approximate locations of roots with the change of sign method

07:23 - Failure of the change of sign method

Stage 2: Practising

Now that you have watched and understood the video, work through the following example sheet to drill the techniques required. Full worked solutions have been provided so remember to check your answers as you go.

Notice a mistake? Please email me details and I'll get it fixed ASAP.