f(x) = sin x ln x , x > 0, where x is in radians. a.
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f(x) = sin x − ln x , x > 0, where x is in radians.
a. Show that f(x) = 0 has a root, α, in the interval [2.2, 2.3].
b. By considering a change of sign of f(x) in a suitable interval, verify that α = 2.219 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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