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    Hi, i've got this question:

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    The problem is, they don't tell where the root is except that it's positive - there are two positive roots, one between 0 and 1 and the other between 1 and 0. Usually to find the root i start with trial and error going from 0, but their solution uses the root between 1 and 2, what am i meant to be doing here? Can i just pick any one?

    Use linear interpolation to find the positive root of the equation x^3 - 5x + 3 = 0 correct to one decimal place.
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    (Original post by Dylex)
    Hi, i've got this question:

    Name:  chap2dq5.jpg
Views: 17
Size:  5.4 KB

    The problem is, they don't tell where the root is except that it's positive - there are two positive roots, one between 0 and 1 and the other between 1 and 0. Usually to find the root i start with trial and error going from 0, but their solution uses the root between 1 and 2, what am i meant to be doing here? Can i just pick any one?
    It's just a flawed question, as long as you pic one root and carry out the procedure correctly there's nothing to worry about. No exam question will be as ambiguous.
 
 
 
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