f(x) = x 3 6x 2 a. Show that the equation f(x) = 0 can

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f(x) = x3 − 6x − 2

a. Show that the equation f(x) = 0 can be written in the formand state the values of the integers a and b. f(x) = 0 has one positive root, α

The iterative formula =is used to find an approximate value for α.

b. Calculate the values of x1, x2, x3 and x4 to 4 decimal places.

c. By choosing a suitable interval, show that α = 2.602 is correct to 3 decimal places.

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Pearson Edexcel A Level Mathematics Pure Mathematics Year 2

ISBN: 9781292183404

1st Edition

Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran

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