f(x) = 1 x cos (x 2 ) a. Show that the equation f(x) =
Question:
f(x) = 1 − x − cos (x2)
a. Show that the equation f(x) = 0 has a root α in the interval 1.4 < α < 1.5.
b. Using x0 = 1.4 as a first approximation to α, apply the Newton–Raphson procedure once to f(x) to find a second approximation to α, giving your answer to 3 decimal places.
c. By considering the change of sign of f(x) over an appropriate interval, show that your answer to part b is correct to 3 decimal places.
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Related Book For
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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