Hi I am doing this question and I have got part of the way through it but my answer doesn't make sense could someone please explain to me what follows:
Show that the root of the equation
2xcosx-1=0 lies between the interval (1,1.5)
So I found that it does using radian form with 0.0806 and -0.7878 but then it asks me to find the root to 2.dp via linear interpolation but when do it my answer is not within the interval ...
Any help would be appreciated
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Is this true?